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Theorem poimirlem9 33418
Description: Lemma for poimir 33442, establishing the two walks that yield a given face when the opposite vertex is neither first nor last. (Contributed by Brendan Leahy, 21-Aug-2020.)
Hypotheses
Ref Expression
poimir.0  |-  ( ph  ->  N  e.  NN )
poimirlem22.s  |-  S  =  { t  e.  ( ( ( ( 0..^ K )  ^m  (
1 ... N ) )  X.  { f  |  f : ( 1 ... N ) -1-1-onto-> ( 1 ... N ) } )  X.  ( 0 ... N ) )  |  F  =  ( y  e.  ( 0 ... ( N  - 
1 ) )  |->  [_ if ( y  <  ( 2nd `  t ) ,  y ,  ( y  +  1 ) )  /  j ]_ (
( 1st `  ( 1st `  t ) )  oF  +  ( ( ( ( 2nd `  ( 1st `  t
) ) " (
1 ... j ) )  X.  { 1 } )  u.  ( ( ( 2nd `  ( 1st `  t ) )
" ( ( j  +  1 ) ... N ) )  X. 
{ 0 } ) ) ) ) }
poimirlem9.1  |-  ( ph  ->  T  e.  S )
poimirlem9.2  |-  ( ph  ->  ( 2nd `  T
)  e.  ( 1 ... ( N  - 
1 ) ) )
poimirlem9.3  |-  ( ph  ->  U  e.  S )
poimirlem9.4  |-  ( ph  ->  ( 2nd `  ( 1st `  U ) )  =/=  ( 2nd `  ( 1st `  T ) ) )
Assertion
Ref Expression
poimirlem9  |-  ( ph  ->  ( 2nd `  ( 1st `  U ) )  =  ( ( 2nd `  ( 1st `  T
) )  o.  ( { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. }  u.  (  _I  |`  ( ( 1 ... N ) 
\  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) ) ) )
Distinct variable groups:    f, j,
t, y    ph, j, y   
j, F, y    j, N, y    T, j, y    U, j, y    ph, t    f, K, j, t    f, N, t    T, f    U, f    f, F, t    t, T    t, U    S, j,
t, y
Allowed substitution hints:    ph( f)    S( f)    K( y)

Proof of Theorem poimirlem9
StepHypRef Expression
1 resundi 5410 . . . 4  |-  ( ( 2nd `  ( 1st `  U ) )  |`  ( { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) }  u.  ( ( 1 ... N )  \  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  =  ( ( ( 2nd `  ( 1st `  U
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  u.  ( ( 2nd `  ( 1st `  U ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )
2 poimir.0 . . . . . . . . . . . . 13  |-  ( ph  ->  N  e.  NN )
32nncnd 11036 . . . . . . . . . . . 12  |-  ( ph  ->  N  e.  CC )
4 npcan1 10455 . . . . . . . . . . . 12  |-  ( N  e.  CC  ->  (
( N  -  1 )  +  1 )  =  N )
53, 4syl 17 . . . . . . . . . . 11  |-  ( ph  ->  ( ( N  - 
1 )  +  1 )  =  N )
62nnzd 11481 . . . . . . . . . . . 12  |-  ( ph  ->  N  e.  ZZ )
7 peano2zm 11420 . . . . . . . . . . . 12  |-  ( N  e.  ZZ  ->  ( N  -  1 )  e.  ZZ )
8 uzid 11702 . . . . . . . . . . . 12  |-  ( ( N  -  1 )  e.  ZZ  ->  ( N  -  1 )  e.  ( ZZ>= `  ( N  -  1 ) ) )
9 peano2uz 11741 . . . . . . . . . . . 12  |-  ( ( N  -  1 )  e.  ( ZZ>= `  ( N  -  1 ) )  ->  ( ( N  -  1 )  +  1 )  e.  ( ZZ>= `  ( N  -  1 ) ) )
106, 7, 8, 94syl 19 . . . . . . . . . . 11  |-  ( ph  ->  ( ( N  - 
1 )  +  1 )  e.  ( ZZ>= `  ( N  -  1
) ) )
115, 10eqeltrrd 2702 . . . . . . . . . 10  |-  ( ph  ->  N  e.  ( ZZ>= `  ( N  -  1
) ) )
12 fzss2 12381 . . . . . . . . . 10  |-  ( N  e.  ( ZZ>= `  ( N  -  1 ) )  ->  ( 1 ... ( N  - 
1 ) )  C_  ( 1 ... N
) )
1311, 12syl 17 . . . . . . . . 9  |-  ( ph  ->  ( 1 ... ( N  -  1 ) )  C_  ( 1 ... N ) )
14 poimirlem9.2 . . . . . . . . 9  |-  ( ph  ->  ( 2nd `  T
)  e.  ( 1 ... ( N  - 
1 ) ) )
1513, 14sseldd 3604 . . . . . . . 8  |-  ( ph  ->  ( 2nd `  T
)  e.  ( 1 ... N ) )
16 fzp1elp1 12394 . . . . . . . . . 10  |-  ( ( 2nd `  T )  e.  ( 1 ... ( N  -  1 ) )  ->  (
( 2nd `  T
)  +  1 )  e.  ( 1 ... ( ( N  - 
1 )  +  1 ) ) )
1714, 16syl 17 . . . . . . . . 9  |-  ( ph  ->  ( ( 2nd `  T
)  +  1 )  e.  ( 1 ... ( ( N  - 
1 )  +  1 ) ) )
185oveq2d 6666 . . . . . . . . 9  |-  ( ph  ->  ( 1 ... (
( N  -  1 )  +  1 ) )  =  ( 1 ... N ) )
1917, 18eleqtrd 2703 . . . . . . . 8  |-  ( ph  ->  ( ( 2nd `  T
)  +  1 )  e.  ( 1 ... N ) )
2015, 19prssd 4354 . . . . . . 7  |-  ( ph  ->  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } 
C_  ( 1 ... N ) )
21 undif 4049 . . . . . . 7  |-  ( { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } 
C_  ( 1 ... N )  <->  ( {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) }  u.  ( ( 1 ... N )  \  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )  =  ( 1 ... N ) )
2220, 21sylib 208 . . . . . 6  |-  ( ph  ->  ( { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) }  u.  ( ( 1 ... N ) 
\  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) )  =  ( 1 ... N
) )
2322reseq2d 5396 . . . . 5  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )  |`  ( { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) }  u.  ( ( 1 ... N ) 
\  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) )  =  ( ( 2nd `  ( 1st `  U
) )  |`  (
1 ... N ) ) )
24 poimirlem9.3 . . . . . . . 8  |-  ( ph  ->  U  e.  S )
25 elrabi 3359 . . . . . . . . 9  |-  ( U  e.  { t  e.  ( ( ( ( 0..^ K )  ^m  ( 1 ... N
) )  X.  {
f  |  f : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
) } )  X.  ( 0 ... N
) )  |  F  =  ( y  e.  ( 0 ... ( N  -  1 ) )  |->  [_ if ( y  <  ( 2nd `  t
) ,  y ,  ( y  +  1 ) )  /  j ]_ ( ( 1st `  ( 1st `  t ) )  oF  +  ( ( ( ( 2nd `  ( 1st `  t
) ) " (
1 ... j ) )  X.  { 1 } )  u.  ( ( ( 2nd `  ( 1st `  t ) )
" ( ( j  +  1 ) ... N ) )  X. 
{ 0 } ) ) ) ) }  ->  U  e.  ( ( ( ( 0..^ K )  ^m  (
1 ... N ) )  X.  { f  |  f : ( 1 ... N ) -1-1-onto-> ( 1 ... N ) } )  X.  ( 0 ... N ) ) )
26 poimirlem22.s . . . . . . . . 9  |-  S  =  { t  e.  ( ( ( ( 0..^ K )  ^m  (
1 ... N ) )  X.  { f  |  f : ( 1 ... N ) -1-1-onto-> ( 1 ... N ) } )  X.  ( 0 ... N ) )  |  F  =  ( y  e.  ( 0 ... ( N  - 
1 ) )  |->  [_ if ( y  <  ( 2nd `  t ) ,  y ,  ( y  +  1 ) )  /  j ]_ (
( 1st `  ( 1st `  t ) )  oF  +  ( ( ( ( 2nd `  ( 1st `  t
) ) " (
1 ... j ) )  X.  { 1 } )  u.  ( ( ( 2nd `  ( 1st `  t ) )
" ( ( j  +  1 ) ... N ) )  X. 
{ 0 } ) ) ) ) }
2725, 26eleq2s 2719 . . . . . . . 8  |-  ( U  e.  S  ->  U  e.  ( ( ( ( 0..^ K )  ^m  ( 1 ... N
) )  X.  {
f  |  f : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
) } )  X.  ( 0 ... N
) ) )
28 xp1st 7198 . . . . . . . 8  |-  ( U  e.  ( ( ( ( 0..^ K )  ^m  ( 1 ... N ) )  X. 
{ f  |  f : ( 1 ... N ) -1-1-onto-> ( 1 ... N
) } )  X.  ( 0 ... N
) )  ->  ( 1st `  U )  e.  ( ( ( 0..^ K )  ^m  (
1 ... N ) )  X.  { f  |  f : ( 1 ... N ) -1-1-onto-> ( 1 ... N ) } ) )
29 xp2nd 7199 . . . . . . . 8  |-  ( ( 1st `  U )  e.  ( ( ( 0..^ K )  ^m  ( 1 ... N
) )  X.  {
f  |  f : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
) } )  -> 
( 2nd `  ( 1st `  U ) )  e.  { f  |  f : ( 1 ... N ) -1-1-onto-> ( 1 ... N ) } )
3024, 27, 28, 294syl 19 . . . . . . 7  |-  ( ph  ->  ( 2nd `  ( 1st `  U ) )  e.  { f  |  f : ( 1 ... N ) -1-1-onto-> ( 1 ... N ) } )
31 fvex 6201 . . . . . . . 8  |-  ( 2nd `  ( 1st `  U
) )  e.  _V
32 f1oeq1 6127 . . . . . . . 8  |-  ( f  =  ( 2nd `  ( 1st `  U ) )  ->  ( f : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
)  <->  ( 2nd `  ( 1st `  U ) ) : ( 1 ... N ) -1-1-onto-> ( 1 ... N
) ) )
3331, 32elab 3350 . . . . . . 7  |-  ( ( 2nd `  ( 1st `  U ) )  e. 
{ f  |  f : ( 1 ... N ) -1-1-onto-> ( 1 ... N
) }  <->  ( 2nd `  ( 1st `  U
) ) : ( 1 ... N ) -1-1-onto-> ( 1 ... N ) )
3430, 33sylib 208 . . . . . 6  |-  ( ph  ->  ( 2nd `  ( 1st `  U ) ) : ( 1 ... N ) -1-1-onto-> ( 1 ... N
) )
35 f1ofn 6138 . . . . . 6  |-  ( ( 2nd `  ( 1st `  U ) ) : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
)  ->  ( 2nd `  ( 1st `  U
) )  Fn  (
1 ... N ) )
36 fnresdm 6000 . . . . . 6  |-  ( ( 2nd `  ( 1st `  U ) )  Fn  ( 1 ... N
)  ->  ( ( 2nd `  ( 1st `  U
) )  |`  (
1 ... N ) )  =  ( 2nd `  ( 1st `  U ) ) )
3734, 35, 363syl 18 . . . . 5  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )  |`  ( 1 ... N
) )  =  ( 2nd `  ( 1st `  U ) ) )
3823, 37eqtrd 2656 . . . 4  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )  |`  ( { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) }  u.  ( ( 1 ... N ) 
\  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) )  =  ( 2nd `  ( 1st `  U ) ) )
391, 38syl5eqr 2670 . . 3  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  U
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  u.  ( ( 2nd `  ( 1st `  U ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  =  ( 2nd `  ( 1st `  U ) ) )
40 2lt3 11195 . . . . . 6  |-  2  <  3
41 2re 11090 . . . . . . 7  |-  2  e.  RR
42 3re 11094 . . . . . . 7  |-  3  e.  RR
4341, 42ltnlei 10158 . . . . . 6  |-  ( 2  <  3  <->  -.  3  <_  2 )
4440, 43mpbi 220 . . . . 5  |-  -.  3  <_  2
45 df-pr 4180 . . . . . . . . . . . 12  |-  { <. ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. }  =  ( { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. }  u.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } )
4645coeq2i 5282 . . . . . . . . . . 11  |-  ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } )  =  ( ( 2nd `  ( 1st `  T
) )  o.  ( { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. }  u.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) )
47 coundi 5636 . . . . . . . . . . 11  |-  ( ( 2nd `  ( 1st `  T ) )  o.  ( { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. }  u.  { <. ( ( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) )  =  ( ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. } )  u.  (
( 2nd `  ( 1st `  T ) )  o.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) )
4846, 47eqtri 2644 . . . . . . . . . 10  |-  ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } )  =  ( ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. } )  u.  (
( 2nd `  ( 1st `  T ) )  o.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) )
49 poimirlem9.1 . . . . . . . . . . . . . . . . . . . 20  |-  ( ph  ->  T  e.  S )
50 elrabi 3359 . . . . . . . . . . . . . . . . . . . . 21  |-  ( T  e.  { t  e.  ( ( ( ( 0..^ K )  ^m  ( 1 ... N
) )  X.  {
f  |  f : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
) } )  X.  ( 0 ... N
) )  |  F  =  ( y  e.  ( 0 ... ( N  -  1 ) )  |->  [_ if ( y  <  ( 2nd `  t
) ,  y ,  ( y  +  1 ) )  /  j ]_ ( ( 1st `  ( 1st `  t ) )  oF  +  ( ( ( ( 2nd `  ( 1st `  t
) ) " (
1 ... j ) )  X.  { 1 } )  u.  ( ( ( 2nd `  ( 1st `  t ) )
" ( ( j  +  1 ) ... N ) )  X. 
{ 0 } ) ) ) ) }  ->  T  e.  ( ( ( ( 0..^ K )  ^m  (
1 ... N ) )  X.  { f  |  f : ( 1 ... N ) -1-1-onto-> ( 1 ... N ) } )  X.  ( 0 ... N ) ) )
5150, 26eleq2s 2719 . . . . . . . . . . . . . . . . . . . 20  |-  ( T  e.  S  ->  T  e.  ( ( ( ( 0..^ K )  ^m  ( 1 ... N
) )  X.  {
f  |  f : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
) } )  X.  ( 0 ... N
) ) )
52 xp1st 7198 . . . . . . . . . . . . . . . . . . . 20  |-  ( T  e.  ( ( ( ( 0..^ K )  ^m  ( 1 ... N ) )  X. 
{ f  |  f : ( 1 ... N ) -1-1-onto-> ( 1 ... N
) } )  X.  ( 0 ... N
) )  ->  ( 1st `  T )  e.  ( ( ( 0..^ K )  ^m  (
1 ... N ) )  X.  { f  |  f : ( 1 ... N ) -1-1-onto-> ( 1 ... N ) } ) )
53 xp2nd 7199 . . . . . . . . . . . . . . . . . . . 20  |-  ( ( 1st `  T )  e.  ( ( ( 0..^ K )  ^m  ( 1 ... N
) )  X.  {
f  |  f : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
) } )  -> 
( 2nd `  ( 1st `  T ) )  e.  { f  |  f : ( 1 ... N ) -1-1-onto-> ( 1 ... N ) } )
5449, 51, 52, 534syl 19 . . . . . . . . . . . . . . . . . . 19  |-  ( ph  ->  ( 2nd `  ( 1st `  T ) )  e.  { f  |  f : ( 1 ... N ) -1-1-onto-> ( 1 ... N ) } )
55 fvex 6201 . . . . . . . . . . . . . . . . . . . 20  |-  ( 2nd `  ( 1st `  T
) )  e.  _V
56 f1oeq1 6127 . . . . . . . . . . . . . . . . . . . 20  |-  ( f  =  ( 2nd `  ( 1st `  T ) )  ->  ( f : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
)  <->  ( 2nd `  ( 1st `  T ) ) : ( 1 ... N ) -1-1-onto-> ( 1 ... N
) ) )
5755, 56elab 3350 . . . . . . . . . . . . . . . . . . 19  |-  ( ( 2nd `  ( 1st `  T ) )  e. 
{ f  |  f : ( 1 ... N ) -1-1-onto-> ( 1 ... N
) }  <->  ( 2nd `  ( 1st `  T
) ) : ( 1 ... N ) -1-1-onto-> ( 1 ... N ) )
5854, 57sylib 208 . . . . . . . . . . . . . . . . . 18  |-  ( ph  ->  ( 2nd `  ( 1st `  T ) ) : ( 1 ... N ) -1-1-onto-> ( 1 ... N
) )
59 f1of1 6136 . . . . . . . . . . . . . . . . . 18  |-  ( ( 2nd `  ( 1st `  T ) ) : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
)  ->  ( 2nd `  ( 1st `  T
) ) : ( 1 ... N )
-1-1-> ( 1 ... N
) )
6058, 59syl 17 . . . . . . . . . . . . . . . . 17  |-  ( ph  ->  ( 2nd `  ( 1st `  T ) ) : ( 1 ... N ) -1-1-> ( 1 ... N ) )
6119snssd 4340 . . . . . . . . . . . . . . . . 17  |-  ( ph  ->  { ( ( 2nd `  T )  +  1 ) }  C_  (
1 ... N ) )
62 f1ores 6151 . . . . . . . . . . . . . . . . 17  |-  ( ( ( 2nd `  ( 1st `  T ) ) : ( 1 ... N ) -1-1-> ( 1 ... N )  /\  { ( ( 2nd `  T
)  +  1 ) }  C_  ( 1 ... N ) )  ->  ( ( 2nd `  ( 1st `  T
) )  |`  { ( ( 2nd `  T
)  +  1 ) } ) : {
( ( 2nd `  T
)  +  1 ) } -1-1-onto-> ( ( 2nd `  ( 1st `  T ) )
" { ( ( 2nd `  T )  +  1 ) } ) )
6360, 61, 62syl2anc 693 . . . . . . . . . . . . . . . 16  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) } ) : { ( ( 2nd `  T )  +  1 ) } -1-1-onto-> ( ( 2nd `  ( 1st `  T ) )
" { ( ( 2nd `  T )  +  1 ) } ) )
64 f1of 6137 . . . . . . . . . . . . . . . 16  |-  ( ( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) } ) : { ( ( 2nd `  T )  +  1 ) } -1-1-onto-> ( ( 2nd `  ( 1st `  T ) )
" { ( ( 2nd `  T )  +  1 ) } )  ->  ( ( 2nd `  ( 1st `  T
) )  |`  { ( ( 2nd `  T
)  +  1 ) } ) : {
( ( 2nd `  T
)  +  1 ) } --> ( ( 2nd `  ( 1st `  T
) ) " {
( ( 2nd `  T
)  +  1 ) } ) )
6563, 64syl 17 . . . . . . . . . . . . . . 15  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) } ) : { ( ( 2nd `  T )  +  1 ) } --> ( ( 2nd `  ( 1st `  T ) ) " { ( ( 2nd `  T )  +  1 ) } ) )
66 f1ofn 6138 . . . . . . . . . . . . . . . . . 18  |-  ( ( 2nd `  ( 1st `  T ) ) : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
)  ->  ( 2nd `  ( 1st `  T
) )  Fn  (
1 ... N ) )
6758, 66syl 17 . . . . . . . . . . . . . . . . 17  |-  ( ph  ->  ( 2nd `  ( 1st `  T ) )  Fn  ( 1 ... N ) )
68 fnsnfv 6258 . . . . . . . . . . . . . . . . 17  |-  ( ( ( 2nd `  ( 1st `  T ) )  Fn  ( 1 ... N )  /\  (
( 2nd `  T
)  +  1 )  e.  ( 1 ... N ) )  ->  { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) }  =  ( ( 2nd `  ( 1st `  T ) )
" { ( ( 2nd `  T )  +  1 ) } ) )
6967, 19, 68syl2anc 693 . . . . . . . . . . . . . . . 16  |-  ( ph  ->  { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) }  =  ( ( 2nd `  ( 1st `  T ) )
" { ( ( 2nd `  T )  +  1 ) } ) )
7069feq3d 6032 . . . . . . . . . . . . . . 15  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  T
) )  |`  { ( ( 2nd `  T
)  +  1 ) } ) : {
( ( 2nd `  T
)  +  1 ) } --> { ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) }  <->  ( ( 2nd `  ( 1st `  T
) )  |`  { ( ( 2nd `  T
)  +  1 ) } ) : {
( ( 2nd `  T
)  +  1 ) } --> ( ( 2nd `  ( 1st `  T
) ) " {
( ( 2nd `  T
)  +  1 ) } ) ) )
7165, 70mpbird 247 . . . . . . . . . . . . . 14  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) } ) : { ( ( 2nd `  T )  +  1 ) } --> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) } )
72 eqid 2622 . . . . . . . . . . . . . . 15  |-  { <. ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) >. }  =  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. }
73 fvex 6201 . . . . . . . . . . . . . . . 16  |-  ( 2nd `  T )  e.  _V
74 ovex 6678 . . . . . . . . . . . . . . . 16  |-  ( ( 2nd `  T )  +  1 )  e. 
_V
7573, 74fsn 6402 . . . . . . . . . . . . . . 15  |-  ( {
<. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. } : { ( 2nd `  T ) } --> { ( ( 2nd `  T
)  +  1 ) }  <->  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. }  =  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. } )
7672, 75mpbir 221 . . . . . . . . . . . . . 14  |-  { <. ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) >. } : {
( 2nd `  T
) } --> { ( ( 2nd `  T
)  +  1 ) }
77 fco2 6059 . . . . . . . . . . . . . 14  |-  ( ( ( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) } ) : { ( ( 2nd `  T )  +  1 ) } --> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) }  /\  {
<. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. } : { ( 2nd `  T ) } --> { ( ( 2nd `  T
)  +  1 ) } )  ->  (
( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. } ) : {
( 2nd `  T
) } --> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) } )
7871, 76, 77sylancl 694 . . . . . . . . . . . . 13  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. } ) : {
( 2nd `  T
) } --> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) } )
79 fvex 6201 . . . . . . . . . . . . . 14  |-  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) )  e.  _V
8079fconst2 6470 . . . . . . . . . . . . 13  |-  ( ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. } ) : {
( 2nd `  T
) } --> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) }  <->  ( ( 2nd `  ( 1st `  T
) )  o.  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. } )  =  ( { ( 2nd `  T
) }  X.  {
( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) } ) )
8178, 80sylib 208 . . . . . . . . . . . 12  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. } )  =  ( { ( 2nd `  T
) }  X.  {
( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) } ) )
8273, 79xpsn 6407 . . . . . . . . . . . 12  |-  ( { ( 2nd `  T
) }  X.  {
( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) } )  =  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >. }
8381, 82syl6eq 2672 . . . . . . . . . . 11  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. } )  =  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >. } )
8483uneq1d 3766 . . . . . . . . . 10  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  T
) )  o.  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. } )  u.  (
( 2nd `  ( 1st `  T ) )  o.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) )  =  ( { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  u.  (
( 2nd `  ( 1st `  T ) )  o.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) ) )
8548, 84syl5eq 2668 . . . . . . . . 9  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } )  =  ( { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >. }  u.  ( ( 2nd `  ( 1st `  T ) )  o.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) ) )
86 elfznn 12370 . . . . . . . . . . . . . . . . 17  |-  ( ( 2nd `  T )  e.  ( 1 ... ( N  -  1 ) )  ->  ( 2nd `  T )  e.  NN )
8714, 86syl 17 . . . . . . . . . . . . . . . 16  |-  ( ph  ->  ( 2nd `  T
)  e.  NN )
8887nnred 11035 . . . . . . . . . . . . . . 15  |-  ( ph  ->  ( 2nd `  T
)  e.  RR )
8988ltp1d 10954 . . . . . . . . . . . . . . 15  |-  ( ph  ->  ( 2nd `  T
)  <  ( ( 2nd `  T )  +  1 ) )
9088, 89ltned 10173 . . . . . . . . . . . . . 14  |-  ( ph  ->  ( 2nd `  T
)  =/=  ( ( 2nd `  T )  +  1 ) )
9190necomd 2849 . . . . . . . . . . . . 13  |-  ( ph  ->  ( ( 2nd `  T
)  +  1 )  =/=  ( 2nd `  T
) )
92 f1veqaeq 6514 . . . . . . . . . . . . . . 15  |-  ( ( ( 2nd `  ( 1st `  T ) ) : ( 1 ... N ) -1-1-> ( 1 ... N )  /\  ( ( ( 2nd `  T )  +  1 )  e.  ( 1 ... N )  /\  ( 2nd `  T )  e.  ( 1 ... N ) ) )  ->  ( ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) )  =  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) )  ->  ( ( 2nd `  T )  +  1 )  =  ( 2nd `  T ) ) )
9360, 19, 15, 92syl12anc 1324 . . . . . . . . . . . . . 14  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) )  =  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) )  ->  ( ( 2nd `  T )  +  1 )  =  ( 2nd `  T ) ) )
9493necon3d 2815 . . . . . . . . . . . . 13  |-  ( ph  ->  ( ( ( 2nd `  T )  +  1 )  =/=  ( 2nd `  T )  ->  (
( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) )  =/=  (
( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) ) )
9591, 94mpd 15 . . . . . . . . . . . 12  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) )  =/=  (
( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) )
9695neneqd 2799 . . . . . . . . . . 11  |-  ( ph  ->  -.  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) )  =  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) )
9773, 79opth 4945 . . . . . . . . . . . 12  |-  ( <.
( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  =  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>. 
<->  ( ( 2nd `  T
)  =  ( 2nd `  T )  /\  (
( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) )  =  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) ) )
9897simprbi 480 . . . . . . . . . . 11  |-  ( <.
( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  =  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>.  ->  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) )  =  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) )
9996, 98nsyl 135 . . . . . . . . . 10  |-  ( ph  ->  -.  <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  =  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>. )
10090neneqd 2799 . . . . . . . . . . 11  |-  ( ph  ->  -.  ( 2nd `  T
)  =  ( ( 2nd `  T )  +  1 ) )
10173, 79opth1 4944 . . . . . . . . . . 11  |-  ( <.
( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  =  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >.  ->  ( 2nd `  T )  =  ( ( 2nd `  T
)  +  1 ) )
102100, 101nsyl 135 . . . . . . . . . 10  |-  ( ph  ->  -.  <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  =  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. )
103 opex 4932 . . . . . . . . . . . . . . 15  |-  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >.  e.  _V
104103snid 4208 . . . . . . . . . . . . . 14  |-  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >.  e.  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >. }
105 elun1 3780 . . . . . . . . . . . . . 14  |-  ( <.
( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  e.  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  ->  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >.  e.  ( { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >. }  u.  (
( 2nd `  ( 1st `  T ) )  o.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) ) )
106104, 105ax-mp 5 . . . . . . . . . . . . 13  |-  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >.  e.  ( { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >. }  u.  (
( 2nd `  ( 1st `  T ) )  o.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) )
107 eleq2 2690 . . . . . . . . . . . . 13  |-  ( ( { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >. }  u.  (
( 2nd `  ( 1st `  T ) )  o.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) )  =  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) >. ,  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  ->  ( <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  e.  ( { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >. }  u.  (
( 2nd `  ( 1st `  T ) )  o.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) )  <->  <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  e.  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >. } ) )
108106, 107mpbii 223 . . . . . . . . . . . 12  |-  ( ( { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >. }  u.  (
( 2nd `  ( 1st `  T ) )  o.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) )  =  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) >. ,  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  ->  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >.  e.  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } )
109103elpr 4198 . . . . . . . . . . . . 13  |-  ( <.
( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  e.  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >. }  <->  ( <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >.  =  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>.  \/  <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  =  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. ) )
110 oran 517 . . . . . . . . . . . . 13  |-  ( (
<. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  =  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>.  \/  <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  =  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. )  <->  -.  ( -.  <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  =  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>.  /\  -.  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >.  =  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. ) )
111109, 110bitri 264 . . . . . . . . . . . 12  |-  ( <.
( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  e.  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >. }  <->  -.  ( -.  <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  =  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>.  /\  -.  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >.  =  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. ) )
112108, 111sylib 208 . . . . . . . . . . 11  |-  ( ( { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >. }  u.  (
( 2nd `  ( 1st `  T ) )  o.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) )  =  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) >. ,  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  ->  -.  ( -.  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >.  =  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>.  /\  -.  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >.  =  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. ) )
113112necon2ai 2823 . . . . . . . . . 10  |-  ( ( -.  <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >.  =  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>.  /\  -.  <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >.  =  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. )  ->  ( { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >. }  u.  (
( 2nd `  ( 1st `  T ) )  o.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) )  =/=  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) >. ,  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } )
11499, 102, 113syl2anc 693 . . . . . . . . 9  |-  ( ph  ->  ( { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >. }  u.  ( ( 2nd `  ( 1st `  T ) )  o.  { <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } ) )  =/=  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) >. ,  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } )
11585, 114eqnetrd 2861 . . . . . . . 8  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } )  =/= 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } )
116 fnressn 6425 . . . . . . . . . . . 12  |-  ( ( ( 2nd `  ( 1st `  T ) )  Fn  ( 1 ... N )  /\  ( 2nd `  T )  e.  ( 1 ... N
) )  ->  (
( 2nd `  ( 1st `  T ) )  |`  { ( 2nd `  T
) } )  =  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. } )
11767, 15, 116syl2anc 693 . . . . . . . . . . 11  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  |`  { ( 2nd `  T
) } )  =  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. } )
118 fnressn 6425 . . . . . . . . . . . 12  |-  ( ( ( 2nd `  ( 1st `  T ) )  Fn  ( 1 ... N )  /\  (
( 2nd `  T
)  +  1 )  e.  ( 1 ... N ) )  -> 
( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) } )  =  { <. ( ( 2nd `  T )  +  1 ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >. } )
11967, 19, 118syl2anc 693 . . . . . . . . . . 11  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) } )  =  { <. ( ( 2nd `  T )  +  1 ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) >. } )
120117, 119uneq12d 3768 . . . . . . . . . 10  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  T
) )  |`  { ( 2nd `  T ) } )  u.  (
( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) } ) )  =  ( { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>. }  u.  { <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ) )
121 df-pr 4180 . . . . . . . . . . . 12  |-  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) }  =  ( { ( 2nd `  T
) }  u.  {
( ( 2nd `  T
)  +  1 ) } )
122121reseq2i 5393 . . . . . . . . . . 11  |-  ( ( 2nd `  ( 1st `  T ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =  ( ( 2nd `  ( 1st `  T ) )  |`  ( { ( 2nd `  T
) }  u.  {
( ( 2nd `  T
)  +  1 ) } ) )
123 resundi 5410 . . . . . . . . . . 11  |-  ( ( 2nd `  ( 1st `  T ) )  |`  ( { ( 2nd `  T
) }  u.  {
( ( 2nd `  T
)  +  1 ) } ) )  =  ( ( ( 2nd `  ( 1st `  T
) )  |`  { ( 2nd `  T ) } )  u.  (
( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) } ) )
124122, 123eqtri 2644 . . . . . . . . . 10  |-  ( ( 2nd `  ( 1st `  T ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =  ( ( ( 2nd `  ( 1st `  T ) )  |`  { ( 2nd `  T
) } )  u.  ( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) } ) )
125 df-pr 4180 . . . . . . . . . 10  |-  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >. }  =  ( { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. }  u.  { <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } )
126120, 124, 1253eqtr4g 2681 . . . . . . . . 9  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >. } )
127 poimirlem9.4 . . . . . . . . . . 11  |-  ( ph  ->  ( 2nd `  ( 1st `  U ) )  =/=  ( 2nd `  ( 1st `  T ) ) )
1282, 26, 49, 14, 24poimirlem8 33417 . . . . . . . . . . . . 13  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )  =  ( ( 2nd `  ( 1st `  T ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )
129 uneq12 3762 . . . . . . . . . . . . . 14  |-  ( ( ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =  ( ( 2nd `  ( 1st `  T ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  /\  ( ( 2nd `  ( 1st `  U ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )  =  ( ( 2nd `  ( 1st `  T ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  -> 
( ( ( 2nd `  ( 1st `  U
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  u.  ( ( 2nd `  ( 1st `  U ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  =  ( ( ( 2nd `  ( 1st `  T
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  u.  ( ( 2nd `  ( 1st `  T ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) ) )
130 resundi 5410 . . . . . . . . . . . . . . . 16  |-  ( ( 2nd `  ( 1st `  T ) )  |`  ( { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) }  u.  ( ( 1 ... N )  \  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  =  ( ( ( 2nd `  ( 1st `  T
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  u.  ( ( 2nd `  ( 1st `  T ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )
13122reseq2d 5396 . . . . . . . . . . . . . . . . 17  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  |`  ( { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) }  u.  ( ( 1 ... N ) 
\  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) )  =  ( ( 2nd `  ( 1st `  T
) )  |`  (
1 ... N ) ) )
132 fnresdm 6000 . . . . . . . . . . . . . . . . . 18  |-  ( ( 2nd `  ( 1st `  T ) )  Fn  ( 1 ... N
)  ->  ( ( 2nd `  ( 1st `  T
) )  |`  (
1 ... N ) )  =  ( 2nd `  ( 1st `  T ) ) )
13358, 66, 1323syl 18 . . . . . . . . . . . . . . . . 17  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  |`  ( 1 ... N
) )  =  ( 2nd `  ( 1st `  T ) ) )
134131, 133eqtrd 2656 . . . . . . . . . . . . . . . 16  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  |`  ( { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) }  u.  ( ( 1 ... N ) 
\  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) )  =  ( 2nd `  ( 1st `  T ) ) )
135130, 134syl5eqr 2670 . . . . . . . . . . . . . . 15  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  T
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  u.  ( ( 2nd `  ( 1st `  T ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  =  ( 2nd `  ( 1st `  T ) ) )
13639, 135eqeq12d 2637 . . . . . . . . . . . . . 14  |-  ( ph  ->  ( ( ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  u.  ( ( 2nd `  ( 1st `  U ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  =  ( ( ( 2nd `  ( 1st `  T
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  u.  ( ( 2nd `  ( 1st `  T ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  <->  ( 2nd `  ( 1st `  U
) )  =  ( 2nd `  ( 1st `  T ) ) ) )
137129, 136syl5ib 234 . . . . . . . . . . . . 13  |-  ( ph  ->  ( ( ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =  ( ( 2nd `  ( 1st `  T ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  /\  ( ( 2nd `  ( 1st `  U ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )  =  ( ( 2nd `  ( 1st `  T ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  -> 
( 2nd `  ( 1st `  U ) )  =  ( 2nd `  ( 1st `  T ) ) ) )
138128, 137mpan2d 710 . . . . . . . . . . . 12  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  U
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  =  ( ( 2nd `  ( 1st `  T ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  ->  ( 2nd `  ( 1st `  U
) )  =  ( 2nd `  ( 1st `  T ) ) ) )
139138necon3d 2815 . . . . . . . . . . 11  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )  =/=  ( 2nd `  ( 1st `  T ) )  ->  ( ( 2nd `  ( 1st `  U
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  =/=  ( ( 2nd `  ( 1st `  T ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )
140127, 139mpd 15 . . . . . . . . . 10  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =/=  ( ( 2nd `  ( 1st `  T ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )
141140necomd 2849 . . . . . . . . 9  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =/=  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )
142126, 141eqnetrrd 2862 . . . . . . . 8  |-  ( ph  ->  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  =/=  (
( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )
143 prex 4909 . . . . . . . . . . . 12  |-  { <. ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. }  e.  _V
14455, 143coex 7118 . . . . . . . . . . 11  |-  ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } )  e.  _V
145 prex 4909 . . . . . . . . . . 11  |-  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T
) ) `  ( 2nd `  T ) )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) >. }  e.  _V
14631resex 5443 . . . . . . . . . . 11  |-  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  e.  _V
147 hashtpg 13267 . . . . . . . . . . 11  |-  ( ( ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } )  e. 
_V  /\  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) >. ,  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  e.  _V  /\  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  e.  _V )  ->  ( ( ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } )  =/=  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) >. ,  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  /\  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  =/=  (
( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  /\  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =/=  ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } ) )  <->  ( # `  {
( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ,  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) } )  =  3 ) )
148144, 145, 146, 147mp3an 1424 . . . . . . . . . 10  |-  ( ( ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } )  =/= 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  /\  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  =/=  (
( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  /\  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =/=  ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } ) )  <->  ( # `  {
( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ,  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) } )  =  3 )
149148biimpi 206 . . . . . . . . 9  |-  ( ( ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } )  =/= 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  /\  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  =/=  (
( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  /\  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =/=  ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } ) )  ->  ( # `  {
( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ,  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) } )  =  3 )
1501493expia 1267 . . . . . . . 8  |-  ( ( ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } )  =/= 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  /\  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  =/=  (
( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )  ->  (
( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =/=  ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } )  ->  ( # `  {
( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ,  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) } )  =  3 ) )
151115, 142, 150syl2anc 693 . . . . . . 7  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  U
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  =/=  ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } )  -> 
( # `  { ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ,  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) } )  =  3 ) )
152 prex 4909 . . . . . . . . . . . . 13  |-  { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) }  e.  _V
153 prex 4909 . . . . . . . . . . . . 13  |-  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) }  e.  _V
154152, 153mapval 7869 . . . . . . . . . . . 12  |-  ( { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) }  ^m  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } --> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } }
155 prfi 8235 . . . . . . . . . . . . 13  |-  { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) }  e.  Fin
156 prfi 8235 . . . . . . . . . . . . 13  |-  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) }  e.  Fin
157 mapfi 8262 . . . . . . . . . . . . 13  |-  ( ( { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) }  e.  Fin  /\ 
{ ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) }  e.  Fin )  -> 
( { ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) }  ^m  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  e.  Fin )
158155, 156, 157mp2an 708 . . . . . . . . . . . 12  |-  ( { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) }  ^m  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  e.  Fin
159154, 158eqeltrri 2698 . . . . . . . . . . 11  |-  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } --> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } }  e.  Fin
160 f1of 6137 . . . . . . . . . . . 12  |-  ( f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) }  ->  f : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } --> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } )
161160ss2abi 3674 . . . . . . . . . . 11  |-  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }  C_ 
{ f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } --> { ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } }
162 ssfi 8180 . . . . . . . . . . 11  |-  ( ( { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } --> { ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } }  e.  Fin  /\  { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } }  C_  { f  |  f : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } --> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } } )  ->  { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } }  e.  Fin )
163159, 161, 162mp2an 708 . . . . . . . . . 10  |-  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }  e.  Fin
16419, 15prssd 4354 . . . . . . . . . . . . . . 15  |-  ( ph  ->  { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) }  C_  ( 1 ... N
) )
165 f1ores 6151 . . . . . . . . . . . . . . 15  |-  ( ( ( 2nd `  ( 1st `  T ) ) : ( 1 ... N ) -1-1-> ( 1 ... N )  /\  { ( ( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) }  C_  (
1 ... N ) )  ->  ( ( 2nd `  ( 1st `  T
) )  |`  { ( ( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) } ) : { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) } -1-1-onto-> ( ( 2nd `  ( 1st `  T ) )
" { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) } ) )
16660, 164, 165syl2anc 693 . . . . . . . . . . . . . 14  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) } ) : { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) } -1-1-onto-> ( ( 2nd `  ( 1st `  T ) )
" { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) } ) )
167 fnimapr 6262 . . . . . . . . . . . . . . . 16  |-  ( ( ( 2nd `  ( 1st `  T ) )  Fn  ( 1 ... N )  /\  (
( 2nd `  T
)  +  1 )  e.  ( 1 ... N )  /\  ( 2nd `  T )  e.  ( 1 ... N
) )  ->  (
( 2nd `  ( 1st `  T ) )
" { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) } )  =  { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } )
16867, 19, 15, 167syl3anc 1326 . . . . . . . . . . . . . . 15  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )
" { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) } )  =  { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } )
169168f1oeq3d 6134 . . . . . . . . . . . . . 14  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  T
) )  |`  { ( ( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) } ) : { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) } -1-1-onto-> ( ( 2nd `  ( 1st `  T ) )
" { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) } )  <->  ( ( 2nd `  ( 1st `  T
) )  |`  { ( ( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) } ) : { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } ) )
170166, 169mpbid 222 . . . . . . . . . . . . 13  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) } ) : { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } )
171 f1oprg 6181 . . . . . . . . . . . . . . 15  |-  ( ( ( ( 2nd `  T
)  e.  _V  /\  ( ( 2nd `  T
)  +  1 )  e.  _V )  /\  ( ( ( 2nd `  T )  +  1 )  e.  _V  /\  ( 2nd `  T )  e.  _V ) )  ->  ( ( ( 2nd `  T )  =/=  ( ( 2nd `  T )  +  1 )  /\  ( ( 2nd `  T )  +  1 )  =/=  ( 2nd `  T
) )  ->  { <. ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) } ) )
17273, 74, 74, 73, 171mp4an 709 . . . . . . . . . . . . . 14  |-  ( ( ( 2nd `  T
)  =/=  ( ( 2nd `  T )  +  1 )  /\  ( ( 2nd `  T
)  +  1 )  =/=  ( 2nd `  T
) )  ->  { <. ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) >. } : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) } )
17390, 91, 172syl2anc 693 . . . . . . . . . . . . 13  |-  ( ph  ->  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) } )
174 f1oco 6159 . . . . . . . . . . . . 13  |-  ( ( ( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) } ) : { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) }  /\  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) } )  -> 
( ( ( 2nd `  ( 1st `  T
) )  |`  { ( ( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) } )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } ) : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } )
175170, 173, 174syl2anc 693 . . . . . . . . . . . 12  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  T
) )  |`  { ( ( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) } )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } ) : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } )
176 rnpropg 5615 . . . . . . . . . . . . . . 15  |-  ( ( ( 2nd `  T
)  e.  _V  /\  ( ( 2nd `  T
)  +  1 )  e.  _V )  ->  ran  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. }  =  { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) } )
17773, 74, 176mp2an 708 . . . . . . . . . . . . . 14  |-  ran  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. }  =  { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) }
178177eqimssi 3659 . . . . . . . . . . . . 13  |-  ran  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. }  C_  { ( ( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) }
179 cores 5638 . . . . . . . . . . . . 13  |-  ( ran 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. }  C_  { ( ( 2nd `  T
)  +  1 ) ,  ( 2nd `  T
) }  ->  (
( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) } )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } )  =  ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) )
180 f1oeq1 6127 . . . . . . . . . . . . 13  |-  ( ( ( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) } )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } )  =  ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } )  -> 
( ( ( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) } )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) }  <->  ( ( 2nd `  ( 1st `  T
) )  o.  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } ) : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } ) )
181178, 179, 180mp2b 10 . . . . . . . . . . . 12  |-  ( ( ( ( 2nd `  ( 1st `  T ) )  |`  { ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) } )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) }  <->  ( ( 2nd `  ( 1st `  T
) )  o.  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } ) : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } )
182175, 181sylib 208 . . . . . . . . . . 11  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } )
18395necomd 2849 . . . . . . . . . . . . 13  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) )  =/=  (
( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) )
184 fvex 6201 . . . . . . . . . . . . . 14  |-  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) )  e.  _V
185 f1oprg 6181 . . . . . . . . . . . . . 14  |-  ( ( ( ( 2nd `  T
)  e.  _V  /\  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) )  e.  _V )  /\  ( ( ( 2nd `  T )  +  1 )  e. 
_V  /\  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) )  e.  _V )
)  ->  ( (
( 2nd `  T
)  =/=  ( ( 2nd `  T )  +  1 )  /\  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) )  =/=  (
( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) )  ->  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) } ) )
18673, 184, 74, 79, 185mp4an 709 . . . . . . . . . . . . 13  |-  ( ( ( 2nd `  T
)  =/=  ( ( 2nd `  T )  +  1 )  /\  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) )  =/=  (
( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) )  ->  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) } )
18790, 183, 186syl2anc 693 . . . . . . . . . . . 12  |-  ( ph  ->  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) } )
188 prcom 4267 . . . . . . . . . . . . 13  |-  { ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) }  =  { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) }
189 f1oeq3 6129 . . . . . . . . . . . . 13  |-  ( { ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) }  =  { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) }  ->  ( { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) }  <->  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) >. ,  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } ) )
190188, 189ax-mp 5 . . . . . . . . . . . 12  |-  ( {
<. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) }  <->  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) >. ,  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } )
191187, 190sylib 208 . . . . . . . . . . 11  |-  ( ph  ->  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } )
192 f1of1 6136 . . . . . . . . . . . . . 14  |-  ( ( 2nd `  ( 1st `  U ) ) : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
)  ->  ( 2nd `  ( 1st `  U
) ) : ( 1 ... N )
-1-1-> ( 1 ... N
) )
19334, 192syl 17 . . . . . . . . . . . . 13  |-  ( ph  ->  ( 2nd `  ( 1st `  U ) ) : ( 1 ... N ) -1-1-> ( 1 ... N ) )
194 f1ores 6151 . . . . . . . . . . . . 13  |-  ( ( ( 2nd `  ( 1st `  U ) ) : ( 1 ... N ) -1-1-> ( 1 ... N )  /\  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } 
C_  ( 1 ... N ) )  -> 
( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) : { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> ( ( 2nd `  ( 1st `  U ) )
" { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) )
195193, 20, 194syl2anc 693 . . . . . . . . . . . 12  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) : { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> ( ( 2nd `  ( 1st `  U ) )
" { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) )
196 dff1o3 6143 . . . . . . . . . . . . . . . . 17  |-  ( ( 2nd `  ( 1st `  U ) ) : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
)  <->  ( ( 2nd `  ( 1st `  U
) ) : ( 1 ... N )
-onto-> ( 1 ... N
)  /\  Fun  `' ( 2nd `  ( 1st `  U ) ) ) )
197196simprbi 480 . . . . . . . . . . . . . . . 16  |-  ( ( 2nd `  ( 1st `  U ) ) : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
)  ->  Fun  `' ( 2nd `  ( 1st `  U ) ) )
198 imadif 5973 . . . . . . . . . . . . . . . 16  |-  ( Fun  `' ( 2nd `  ( 1st `  U ) )  ->  ( ( 2nd `  ( 1st `  U
) ) " (
( 1 ... N
)  \  ( (
1 ... N )  \  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  =  ( ( ( 2nd `  ( 1st `  U
) ) " (
1 ... N ) ) 
\  ( ( 2nd `  ( 1st `  U
) ) " (
( 1 ... N
)  \  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) ) )
19934, 197, 1983syl 18 . . . . . . . . . . . . . . 15  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )
" ( ( 1 ... N )  \ 
( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  =  ( ( ( 2nd `  ( 1st `  U
) ) " (
1 ... N ) ) 
\  ( ( 2nd `  ( 1st `  U
) ) " (
( 1 ... N
)  \  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) ) )
200 f1ofo 6144 . . . . . . . . . . . . . . . . . 18  |-  ( ( 2nd `  ( 1st `  U ) ) : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
)  ->  ( 2nd `  ( 1st `  U
) ) : ( 1 ... N )
-onto-> ( 1 ... N
) )
201 foima 6120 . . . . . . . . . . . . . . . . . 18  |-  ( ( 2nd `  ( 1st `  U ) ) : ( 1 ... N
) -onto-> ( 1 ... N )  ->  (
( 2nd `  ( 1st `  U ) )
" ( 1 ... N ) )  =  ( 1 ... N
) )
20234, 200, 2013syl 18 . . . . . . . . . . . . . . . . 17  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )
" ( 1 ... N ) )  =  ( 1 ... N
) )
203 f1ofo 6144 . . . . . . . . . . . . . . . . . 18  |-  ( ( 2nd `  ( 1st `  T ) ) : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
)  ->  ( 2nd `  ( 1st `  T
) ) : ( 1 ... N )
-onto-> ( 1 ... N
) )
204 foima 6120 . . . . . . . . . . . . . . . . . 18  |-  ( ( 2nd `  ( 1st `  T ) ) : ( 1 ... N
) -onto-> ( 1 ... N )  ->  (
( 2nd `  ( 1st `  T ) )
" ( 1 ... N ) )  =  ( 1 ... N
) )
20558, 203, 2043syl 18 . . . . . . . . . . . . . . . . 17  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )
" ( 1 ... N ) )  =  ( 1 ... N
) )
206202, 205eqtr4d 2659 . . . . . . . . . . . . . . . 16  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )
" ( 1 ... N ) )  =  ( ( 2nd `  ( 1st `  T ) )
" ( 1 ... N ) ) )
207128rneqd 5353 . . . . . . . . . . . . . . . . 17  |-  ( ph  ->  ran  ( ( 2nd `  ( 1st `  U
) )  |`  (
( 1 ... N
)  \  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) )  =  ran  ( ( 2nd `  ( 1st `  T
) )  |`  (
( 1 ... N
)  \  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) )
208 df-ima 5127 . . . . . . . . . . . . . . . . 17  |-  ( ( 2nd `  ( 1st `  U ) ) "
( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )  =  ran  ( ( 2nd `  ( 1st `  U ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )
209 df-ima 5127 . . . . . . . . . . . . . . . . 17  |-  ( ( 2nd `  ( 1st `  T ) ) "
( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )  =  ran  ( ( 2nd `  ( 1st `  T ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )
210207, 208, 2093eqtr4g 2681 . . . . . . . . . . . . . . . 16  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )
" ( ( 1 ... N )  \  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )  =  ( ( 2nd `  ( 1st `  T ) )
" ( ( 1 ... N )  \  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )
211206, 210difeq12d 3729 . . . . . . . . . . . . . . 15  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  U
) ) " (
1 ... N ) ) 
\  ( ( 2nd `  ( 1st `  U
) ) " (
( 1 ... N
)  \  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) )  =  ( ( ( 2nd `  ( 1st `  T ) ) "
( 1 ... N
) )  \  (
( 2nd `  ( 1st `  T ) )
" ( ( 1 ... N )  \  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) ) )
212 dff1o3 6143 . . . . . . . . . . . . . . . . . 18  |-  ( ( 2nd `  ( 1st `  T ) ) : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
)  <->  ( ( 2nd `  ( 1st `  T
) ) : ( 1 ... N )
-onto-> ( 1 ... N
)  /\  Fun  `' ( 2nd `  ( 1st `  T ) ) ) )
213212simprbi 480 . . . . . . . . . . . . . . . . 17  |-  ( ( 2nd `  ( 1st `  T ) ) : ( 1 ... N
)
-1-1-onto-> ( 1 ... N
)  ->  Fun  `' ( 2nd `  ( 1st `  T ) ) )
214 imadif 5973 . . . . . . . . . . . . . . . . 17  |-  ( Fun  `' ( 2nd `  ( 1st `  T ) )  ->  ( ( 2nd `  ( 1st `  T
) ) " (
( 1 ... N
)  \  ( (
1 ... N )  \  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  =  ( ( ( 2nd `  ( 1st `  T
) ) " (
1 ... N ) ) 
\  ( ( 2nd `  ( 1st `  T
) ) " (
( 1 ... N
)  \  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) ) )
21558, 213, 2143syl 18 . . . . . . . . . . . . . . . 16  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )
" ( ( 1 ... N )  \ 
( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  =  ( ( ( 2nd `  ( 1st `  T
) ) " (
1 ... N ) ) 
\  ( ( 2nd `  ( 1st `  T
) ) " (
( 1 ... N
)  \  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) ) )
216 dfin4 3867 . . . . . . . . . . . . . . . . . 18  |-  ( ( 1 ... N )  i^i  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } )  =  ( ( 1 ... N
)  \  ( (
1 ... N )  \  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )
217 sseqin2 3817 . . . . . . . . . . . . . . . . . . 19  |-  ( { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } 
C_  ( 1 ... N )  <->  ( (
1 ... N )  i^i 
{ ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )
21820, 217sylib 208 . . . . . . . . . . . . . . . . . 18  |-  ( ph  ->  ( ( 1 ... N )  i^i  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )
219216, 218syl5eqr 2670 . . . . . . . . . . . . . . . . 17  |-  ( ph  ->  ( ( 1 ... N )  \  (
( 1 ... N
)  \  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) )  =  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )
220219imaeq2d 5466 . . . . . . . . . . . . . . . 16  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )
" ( ( 1 ... N )  \ 
( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  =  ( ( 2nd `  ( 1st `  T ) )
" { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) )
221215, 220eqtr3d 2658 . . . . . . . . . . . . . . 15  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  T
) ) " (
1 ... N ) ) 
\  ( ( 2nd `  ( 1st `  T
) ) " (
( 1 ... N
)  \  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) )  =  ( ( 2nd `  ( 1st `  T
) ) " {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )
222199, 211, 2213eqtrd 2660 . . . . . . . . . . . . . 14  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )
" ( ( 1 ... N )  \ 
( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  =  ( ( 2nd `  ( 1st `  T ) )
" { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) )
223219imaeq2d 5466 . . . . . . . . . . . . . 14  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )
" ( ( 1 ... N )  \ 
( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  =  ( ( 2nd `  ( 1st `  U ) )
" { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) )
224 fnimapr 6262 . . . . . . . . . . . . . . . 16  |-  ( ( ( 2nd `  ( 1st `  T ) )  Fn  ( 1 ... N )  /\  ( 2nd `  T )  e.  ( 1 ... N
)  /\  ( ( 2nd `  T )  +  1 )  e.  ( 1 ... N ) )  ->  ( ( 2nd `  ( 1st `  T
) ) " {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =  { ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) } )
22567, 15, 19, 224syl3anc 1326 . . . . . . . . . . . . . . 15  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )
" { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } )  =  {
( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) } )
226225, 188syl6eq 2672 . . . . . . . . . . . . . 14  |-  ( ph  ->  ( ( 2nd `  ( 1st `  T ) )
" { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } )  =  {
( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } )
227222, 223, 2263eqtr3d 2664 . . . . . . . . . . . . 13  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )
" { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } )  =  {
( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } )
228227f1oeq3d 6134 . . . . . . . . . . . 12  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  U
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } ) : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> ( ( 2nd `  ( 1st `  U ) )
" { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } )  <->  ( ( 2nd `  ( 1st `  U
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } ) : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } ) )
229195, 228mpbid 222 . . . . . . . . . . 11  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) : { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } )
230 ssabral 3673 . . . . . . . . . . . 12  |-  ( { ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ,  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) }  C_  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }  <->  A. f  e.  { ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ,  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) } f : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } )
231 f1oeq1 6127 . . . . . . . . . . . . 13  |-  ( f  =  ( ( 2nd `  ( 1st `  T
) )  o.  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } )  ->  ( f : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) }  <->  ( ( 2nd `  ( 1st `  T
) )  o.  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } ) : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } ) )
232 f1oeq1 6127 . . . . . . . . . . . . 13  |-  ( f  =  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) >. ,  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. }  ->  (
f : { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) }  <->  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) >. ,  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } ) )
233 f1oeq1 6127 . . . . . . . . . . . . 13  |-  ( f  =  ( ( 2nd `  ( 1st `  U
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  -> 
( f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) }  <->  ( ( 2nd `  ( 1st `  U
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } ) : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } ) )
234144, 145, 146, 231, 232, 233raltp 4240 . . . . . . . . . . . 12  |-  ( A. f  e.  { (
( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ,  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) } f : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) }  <->  ( (
( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) }  /\  {
<. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) }  /\  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) : { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } ) )
235230, 234bitri 264 . . . . . . . . . . 11  |-  ( { ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ,  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) }  C_  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }  <->  ( ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) }  /\  {
<. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) }  /\  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) : { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } ) )
236182, 191, 229, 235syl3anbrc 1246 . . . . . . . . . 10  |-  ( ph  ->  { ( ( 2nd `  ( 1st `  T
) )  o.  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } ) ,  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) >. ,  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) }  C_  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }
)
237 hashss 13197 . . . . . . . . . 10  |-  ( ( { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } }  e.  Fin  /\  { ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } ) ,  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) >. ,  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) }  C_  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }
)  ->  ( # `  {
( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ,  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) } )  <_ 
( # `  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }
) )
238163, 236, 237sylancr 695 . . . . . . . . 9  |-  ( ph  ->  ( # `  {
( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ,  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) } )  <_ 
( # `  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }
) )
239153enref 7988 . . . . . . . . . . . 12  |-  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) }  ~~  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) }
240 hashprg 13182 . . . . . . . . . . . . . . . 16  |-  ( ( ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) )  e.  _V  /\  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) )  e.  _V )  ->  ( ( ( 2nd `  ( 1st `  T ) ) `  ( ( 2nd `  T
)  +  1 ) )  =/=  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) )  <->  ( # `  {
( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } )  =  2 ) )
24179, 184, 240mp2an 708 . . . . . . . . . . . . . . 15  |-  ( ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) )  =/=  (
( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) )  <->  ( # `  {
( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } )  =  2 )
24295, 241sylib 208 . . . . . . . . . . . . . 14  |-  ( ph  ->  ( # `  {
( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } )  =  2 )
243 hashprg 13182 . . . . . . . . . . . . . . . 16  |-  ( ( ( 2nd `  T
)  e.  _V  /\  ( ( 2nd `  T
)  +  1 )  e.  _V )  -> 
( ( 2nd `  T
)  =/=  ( ( 2nd `  T )  +  1 )  <->  ( # `  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =  2 ) )
24473, 74, 243mp2an 708 . . . . . . . . . . . . . . 15  |-  ( ( 2nd `  T )  =/=  ( ( 2nd `  T )  +  1 )  <->  ( # `  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =  2 )
24590, 244sylib 208 . . . . . . . . . . . . . 14  |-  ( ph  ->  ( # `  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =  2 )
246242, 245eqtr4d 2659 . . . . . . . . . . . . 13  |-  ( ph  ->  ( # `  {
( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } )  =  ( # `  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )
247 hashen 13135 . . . . . . . . . . . . . 14  |-  ( ( { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) }  e.  Fin  /\ 
{ ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) }  e.  Fin )  -> 
( ( # `  {
( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } )  =  ( # `  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  <->  { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) }  ~~  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )
248155, 156, 247mp2an 708 . . . . . . . . . . . . 13  |-  ( (
# `  { (
( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } )  =  ( # `  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  <->  { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) }  ~~  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )
249246, 248sylib 208 . . . . . . . . . . . 12  |-  ( ph  ->  { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) }  ~~  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )
250 hashfacen 13238 . . . . . . . . . . . 12  |-  ( ( { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } 
~~  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) }  /\  { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) }  ~~  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  ->  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }  ~~  { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } } )
251239, 249, 250sylancr 695 . . . . . . . . . . 11  |-  ( ph  ->  { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } }  ~~  { f  |  f : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } } )
252153, 153mapval 7869 . . . . . . . . . . . . . 14  |-  ( { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) }  ^m  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } )  =  {
f  |  f : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } --> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } }
253 mapfi 8262 . . . . . . . . . . . . . . 15  |-  ( ( { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) }  e.  Fin  /\  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) }  e.  Fin )  -> 
( { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) }  ^m  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  e. 
Fin )
254156, 156, 253mp2an 708 . . . . . . . . . . . . . 14  |-  ( { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) }  ^m  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } )  e.  Fin
255252, 254eqeltrri 2698 . . . . . . . . . . . . 13  |-  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } --> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } }  e.  Fin
256 f1of 6137 . . . . . . . . . . . . . 14  |-  ( f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) }  ->  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } --> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )
257256ss2abi 3674 . . . . . . . . . . . . 13  |-  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } }  C_  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } --> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } }
258 ssfi 8180 . . . . . . . . . . . . 13  |-  ( ( { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } --> { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } }  e.  Fin  /\ 
{ f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } }  C_  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } --> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } } )  ->  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } }  e.  Fin )
259255, 257, 258mp2an 708 . . . . . . . . . . . 12  |-  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } }  e.  Fin
260 hashen 13135 . . . . . . . . . . . 12  |-  ( ( { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) } }  e.  Fin  /\  { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } }  e.  Fin )  ->  ( ( # `  {
f  |  f : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }
)  =  ( # `  { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } } )  <->  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }  ~~  { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } } ) )
261163, 259, 260mp2an 708 . . . . . . . . . . 11  |-  ( (
# `  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }
)  =  ( # `  { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } } )  <->  { f  |  f : {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }  ~~  { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } } )
262251, 261sylibr 224 . . . . . . . . . 10  |-  ( ph  ->  ( # `  {
f  |  f : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }
)  =  ( # `  { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } } ) )
263 hashfac 13242 . . . . . . . . . . . 12  |-  ( { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) }  e.  Fin  ->  ( # `
 { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } } )  =  ( ! `  ( # `  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )
264156, 263ax-mp 5 . . . . . . . . . . 11  |-  ( # `  { f  |  f : { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } } )  =  ( ! `  ( # `  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )
265245fveq2d 6195 . . . . . . . . . . . 12  |-  ( ph  ->  ( ! `  ( # `
 { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) )  =  ( ! `  2
) )
266 fac2 13066 . . . . . . . . . . . 12  |-  ( ! `
 2 )  =  2
267265, 266syl6eq 2672 . . . . . . . . . . 11  |-  ( ph  ->  ( ! `  ( # `
 { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) )  =  2 )
268264, 267syl5eq 2668 . . . . . . . . . 10  |-  ( ph  ->  ( # `  {
f  |  f : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } } )  =  2 )
269262, 268eqtrd 2656 . . . . . . . . 9  |-  ( ph  ->  ( # `  {
f  |  f : { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } -1-1-onto-> { ( ( 2nd `  ( 1st `  T ) ) `
 ( ( 2nd `  T )  +  1 ) ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) } }
)  =  2 )
270238, 269breqtrd 4679 . . . . . . . 8  |-  ( ph  ->  ( # `  {
( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ,  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) } )  <_ 
2 )
271 breq1 4656 . . . . . . . 8  |-  ( (
# `  { (
( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ,  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) } )  =  3  ->  ( ( # `
 { ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } ) ,  { <. ( 2nd `  T ) ,  ( ( 2nd `  ( 1st `  T ) ) `
 ( 2nd `  T
) ) >. ,  <. ( ( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) } )  <_ 
2  <->  3  <_  2
) )
272270, 271syl5ibcom 235 . . . . . . 7  |-  ( ph  ->  ( ( # `  {
( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ,  { <. ( 2nd `  T
) ,  ( ( 2nd `  ( 1st `  T ) ) `  ( 2nd `  T ) ) >. ,  <. (
( 2nd `  T
)  +  1 ) ,  ( ( 2nd `  ( 1st `  T
) ) `  (
( 2nd `  T
)  +  1 ) ) >. } ,  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) } )  =  3  ->  3  <_  2 ) )
273151, 272syld 47 . . . . . 6  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  U
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  =/=  ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } )  -> 
3  <_  2 ) )
274273necon1bd 2812 . . . . 5  |-  ( ph  ->  ( -.  3  <_ 
2  ->  ( ( 2nd `  ( 1st `  U
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  =  ( ( 2nd `  ( 1st `  T ) )  o.  { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. } ) ) )
27544, 274mpi 20 . . . 4  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )  |`  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } )  =  ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } ) )
276 coires1 5653 . . . . 5  |-  ( ( 2nd `  ( 1st `  T ) )  o.  (  _I  |`  (
( 1 ... N
)  \  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) )  =  ( ( 2nd `  ( 1st `  T
) )  |`  (
( 1 ... N
)  \  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) )
277128, 276syl6eqr 2674 . . . 4  |-  ( ph  ->  ( ( 2nd `  ( 1st `  U ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) )  =  ( ( 2nd `  ( 1st `  T ) )  o.  (  _I  |`  (
( 1 ... N
)  \  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) ) )
278275, 277uneq12d 3768 . . 3  |-  ( ph  ->  ( ( ( 2nd `  ( 1st `  U
) )  |`  { ( 2nd `  T ) ,  ( ( 2nd `  T )  +  1 ) } )  u.  ( ( 2nd `  ( 1st `  U ) )  |`  ( ( 1 ... N )  \  {
( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) )  =  ( ( ( 2nd `  ( 1st `  T
) )  o.  { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } )  u.  ( ( 2nd `  ( 1st `  T
) )  o.  (  _I  |`  ( ( 1 ... N )  \  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) ) ) )
27939, 278eqtr3d 2658 . 2  |-  ( ph  ->  ( 2nd `  ( 1st `  U ) )  =  ( ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } )  u.  ( ( 2nd `  ( 1st `  T
) )  o.  (  _I  |`  ( ( 1 ... N )  \  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) ) ) )
280 coundi 5636 . 2  |-  ( ( 2nd `  ( 1st `  T ) )  o.  ( { <. ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 )
>. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T
) >. }  u.  (  _I  |`  ( ( 1 ... N )  \  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) ) )  =  ( ( ( 2nd `  ( 1st `  T ) )  o. 
{ <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. } )  u.  ( ( 2nd `  ( 1st `  T
) )  o.  (  _I  |`  ( ( 1 ... N )  \  { ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) } ) ) ) )
281279, 280syl6eqr 2674 1  |-  ( ph  ->  ( 2nd `  ( 1st `  U ) )  =  ( ( 2nd `  ( 1st `  T
) )  o.  ( { <. ( 2nd `  T
) ,  ( ( 2nd `  T )  +  1 ) >. ,  <. ( ( 2nd `  T )  +  1 ) ,  ( 2nd `  T ) >. }  u.  (  _I  |`  ( ( 1 ... N ) 
\  { ( 2nd `  T ) ,  ( ( 2nd `  T
)  +  1 ) } ) ) ) ) )
Colors of variables: wff setvar class
Syntax hints:   -. wn 3    -> wi 4    <-> wb 196    \/ wo 383    /\ wa 384    /\ w3a 1037    = wceq 1483    e. wcel 1990   {cab 2608    =/= wne 2794   A.wral 2912   {crab 2916   _Vcvv 3200   [_csb 3533    \ cdif 3571    u. cun 3572    i^i cin 3573    C_ wss 3574   ifcif 4086   {csn 4177   {cpr 4179   {ctp 4181   <.cop 4183   class class class wbr 4653    |-> cmpt 4729    _I cid 5023    X. cxp 5112   `'ccnv 5113   ran crn 5115    |` cres 5116   "cima 5117    o. ccom 5118   Fun wfun 5882    Fn wfn 5883   -->wf 5884   -1-1->wf1 5885   -onto->wfo 5886   -1-1-onto->wf1o 5887   ` cfv 5888  (class class class)co 6650    oFcof 6895   1stc1st 7166   2ndc2nd 7167    ^m cmap 7857    ~~ cen 7952   Fincfn 7955   CCcc 9934   0cc0 9936   1c1 9937    + caddc 9939    < clt 10074    <_ cle 10075    - cmin 10266   NNcn 11020   2c2 11070   3c3 11071   ZZcz 11377   ZZ>=cuz 11687   ...cfz 12326  ..^cfzo 12465   !cfa 13060   #chash 13117
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-resscn 9993  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-mulcom 10000  ax-addass 10001  ax-mulass 10002  ax-distr 10003  ax-i2m1 10004  ax-1ne0 10005  ax-1rid 10006  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009  ax-pre-lttri 10010  ax-pre-lttrn 10011  ax-pre-ltadd 10012  ax-pre-mulgt0 10013
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-int 4476  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-of 6897  df-om 7066  df-1st 7168  df-2nd 7169  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-1o 7560  df-2o 7561  df-oadd 7564  df-er 7742  df-map 7859  df-pm 7860  df-en 7956  df-dom 7957  df-sdom 7958  df-fin 7959  df-card 8765  df-cda 8990  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-sub 10268  df-neg 10269  df-div 10685  df-nn 11021  df-2 11079  df-3 11080  df-n0 11293  df-xnn0 11364  df-z 11378  df-uz 11688  df-fz 12327  df-fzo 12466  df-seq 12802  df-fac 13061  df-bc 13090  df-hash 13118
This theorem is referenced by:  poimirlem22  33431
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