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Theorem isores2 5473
Description: An isomorphism from one well-order to another can be restricted on either well-order. (Contributed by Mario Carneiro, 15-Jan-2013.)
Assertion
Ref Expression
isores2  |-  ( H 
Isom  R ,  S  ( A ,  B )  <-> 
H  Isom  R , 
( S  i^i  ( B  X.  B ) ) ( A ,  B
) )

Proof of Theorem isores2
Dummy variables  x  y are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 f1of 5146 . . . . . . . 8  |-  ( H : A -1-1-onto-> B  ->  H : A
--> B )
2 ffvelrn 5321 . . . . . . . . . 10  |-  ( ( H : A --> B  /\  x  e.  A )  ->  ( H `  x
)  e.  B )
32adantrr 462 . . . . . . . . 9  |-  ( ( H : A --> B  /\  ( x  e.  A  /\  y  e.  A
) )  ->  ( H `  x )  e.  B )
4 ffvelrn 5321 . . . . . . . . . 10  |-  ( ( H : A --> B  /\  y  e.  A )  ->  ( H `  y
)  e.  B )
54adantrl 461 . . . . . . . . 9  |-  ( ( H : A --> B  /\  ( x  e.  A  /\  y  e.  A
) )  ->  ( H `  y )  e.  B )
6 brinxp 4426 . . . . . . . . 9  |-  ( ( ( H `  x
)  e.  B  /\  ( H `  y )  e.  B )  -> 
( ( H `  x ) S ( H `  y )  <-> 
( H `  x
) ( S  i^i  ( B  X.  B
) ) ( H `
 y ) ) )
73, 5, 6syl2anc 403 . . . . . . . 8  |-  ( ( H : A --> B  /\  ( x  e.  A  /\  y  e.  A
) )  ->  (
( H `  x
) S ( H `
 y )  <->  ( H `  x ) ( S  i^i  ( B  X.  B ) ) ( H `  y ) ) )
81, 7sylan 277 . . . . . . 7  |-  ( ( H : A -1-1-onto-> B  /\  ( x  e.  A  /\  y  e.  A
) )  ->  (
( H `  x
) S ( H `
 y )  <->  ( H `  x ) ( S  i^i  ( B  X.  B ) ) ( H `  y ) ) )
98anassrs 392 . . . . . 6  |-  ( ( ( H : A -1-1-onto-> B  /\  x  e.  A
)  /\  y  e.  A )  ->  (
( H `  x
) S ( H `
 y )  <->  ( H `  x ) ( S  i^i  ( B  X.  B ) ) ( H `  y ) ) )
109bibi2d 230 . . . . 5  |-  ( ( ( H : A -1-1-onto-> B  /\  x  e.  A
)  /\  y  e.  A )  ->  (
( x R y  <-> 
( H `  x
) S ( H `
 y ) )  <-> 
( x R y  <-> 
( H `  x
) ( S  i^i  ( B  X.  B
) ) ( H `
 y ) ) ) )
1110ralbidva 2364 . . . 4  |-  ( ( H : A -1-1-onto-> B  /\  x  e.  A )  ->  ( A. y  e.  A  ( x R y  <->  ( H `  x ) S ( H `  y ) )  <->  A. y  e.  A  ( x R y  <-> 
( H `  x
) ( S  i^i  ( B  X.  B
) ) ( H `
 y ) ) ) )
1211ralbidva 2364 . . 3  |-  ( H : A -1-1-onto-> B  ->  ( A. x  e.  A  A. y  e.  A  (
x R y  <->  ( H `  x ) S ( H `  y ) )  <->  A. x  e.  A  A. y  e.  A  ( x R y  <-> 
( H `  x
) ( S  i^i  ( B  X.  B
) ) ( H `
 y ) ) ) )
1312pm5.32i 441 . 2  |-  ( ( H : A -1-1-onto-> B  /\  A. x  e.  A  A. y  e.  A  (
x R y  <->  ( H `  x ) S ( H `  y ) ) )  <->  ( H : A -1-1-onto-> B  /\  A. x  e.  A  A. y  e.  A  ( x R y  <->  ( H `  x ) ( S  i^i  ( B  X.  B ) ) ( H `  y ) ) ) )
14 df-isom 4931 . 2  |-  ( H 
Isom  R ,  S  ( A ,  B )  <-> 
( H : A -1-1-onto-> B  /\  A. x  e.  A  A. y  e.  A  ( x R y  <-> 
( H `  x
) S ( H `
 y ) ) ) )
15 df-isom 4931 . 2  |-  ( H 
Isom  R ,  ( S  i^i  ( B  X.  B ) ) ( A ,  B )  <-> 
( H : A -1-1-onto-> B  /\  A. x  e.  A  A. y  e.  A  ( x R y  <-> 
( H `  x
) ( S  i^i  ( B  X.  B
) ) ( H `
 y ) ) ) )
1613, 14, 153bitr4i 210 1  |-  ( H 
Isom  R ,  S  ( A ,  B )  <-> 
H  Isom  R , 
( S  i^i  ( B  X.  B ) ) ( A ,  B
) )
Colors of variables: wff set class
Syntax hints:    /\ wa 102    <-> wb 103    e. wcel 1433   A.wral 2348    i^i cin 2972   class class class wbr 3785    X. cxp 4361   -->wf 4918   -1-1-onto->wf1o 4921   ` cfv 4922    Isom wiso 4923
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-io 662  ax-5 1376  ax-7 1377  ax-gen 1378  ax-ie1 1422  ax-ie2 1423  ax-8 1435  ax-10 1436  ax-11 1437  ax-i12 1438  ax-bndl 1439  ax-4 1440  ax-14 1445  ax-17 1459  ax-i9 1463  ax-ial 1467  ax-i5r 1468  ax-ext 2063  ax-sep 3896  ax-pow 3948  ax-pr 3964
This theorem depends on definitions:  df-bi 115  df-3an 921  df-tru 1287  df-nf 1390  df-sb 1686  df-eu 1944  df-mo 1945  df-clab 2068  df-cleq 2074  df-clel 2077  df-nfc 2208  df-ral 2353  df-rex 2354  df-v 2603  df-sbc 2816  df-un 2977  df-in 2979  df-ss 2986  df-pw 3384  df-sn 3404  df-pr 3405  df-op 3407  df-uni 3602  df-br 3786  df-opab 3840  df-id 4048  df-xp 4369  df-rel 4370  df-cnv 4371  df-co 4372  df-dm 4373  df-rn 4374  df-iota 4887  df-fun 4924  df-fn 4925  df-f 4926  df-f1 4927  df-f1o 4929  df-fv 4930  df-isom 4931
This theorem is referenced by:  isores1  5474
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