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Theorem jm2.25lem1 37565
Description: Lemma for jm2.26 37569. (Contributed by Stefan O'Rear, 2-Oct-2014.)
Assertion
Ref Expression
jm2.25lem1  |-  ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  -> 
( ( A  ||  ( D  -  B
)  \/  A  ||  ( D  -  -u B
) )  <->  ( A  ||  ( C  -  B
)  \/  A  ||  ( C  -  -u B
) ) ) )

Proof of Theorem jm2.25lem1
StepHypRef Expression
1 simpl1l 1112 . . 3  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( D  -  B )  \/  A  ||  ( D  -  -u B ) ) )  ->  A  e.  ZZ )
2 simpl2l 1114 . . 3  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( D  -  B )  \/  A  ||  ( D  -  -u B ) ) )  ->  C  e.  ZZ )
3 simpl2r 1115 . . 3  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( D  -  B )  \/  A  ||  ( D  -  -u B ) ) )  ->  D  e.  ZZ )
4 simpl1r 1113 . . 3  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( D  -  B )  \/  A  ||  ( D  -  -u B ) ) )  ->  B  e.  ZZ )
5 simpl3 1066 . . 3  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( D  -  B )  \/  A  ||  ( D  -  -u B ) ) )  ->  ( A  ||  ( C  -  D
)  \/  A  ||  ( C  -  -u D
) ) )
6 simpr 477 . . 3  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( D  -  B )  \/  A  ||  ( D  -  -u B ) ) )  ->  ( A  ||  ( D  -  B
)  \/  A  ||  ( D  -  -u B
) ) )
7 acongtr 37545 . . 3  |-  ( ( ( A  e.  ZZ  /\  C  e.  ZZ )  /\  ( D  e.  ZZ  /\  B  e.  ZZ )  /\  (
( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D ) )  /\  ( A  ||  ( D  -  B
)  \/  A  ||  ( D  -  -u B
) ) ) )  ->  ( A  ||  ( C  -  B
)  \/  A  ||  ( C  -  -u B
) ) )
81, 2, 3, 4, 5, 6, 7syl222anc 1342 . 2  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( D  -  B )  \/  A  ||  ( D  -  -u B ) ) )  ->  ( A  ||  ( C  -  B
)  \/  A  ||  ( C  -  -u B
) ) )
9 simpl1l 1112 . . 3  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( C  -  B )  \/  A  ||  ( C  -  -u B ) ) )  ->  A  e.  ZZ )
10 simpl2r 1115 . . 3  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( C  -  B )  \/  A  ||  ( C  -  -u B ) ) )  ->  D  e.  ZZ )
11 simpl2l 1114 . . 3  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( C  -  B )  \/  A  ||  ( C  -  -u B ) ) )  ->  C  e.  ZZ )
12 simpl1r 1113 . . 3  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( C  -  B )  \/  A  ||  ( C  -  -u B ) ) )  ->  B  e.  ZZ )
13 simpl3 1066 . . . 4  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( C  -  B )  \/  A  ||  ( C  -  -u B ) ) )  ->  ( A  ||  ( C  -  D
)  \/  A  ||  ( C  -  -u D
) ) )
14 acongsym 37543 . . . 4  |-  ( ( ( A  e.  ZZ  /\  C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D ) ) )  ->  ( A  ||  ( D  -  C
)  \/  A  ||  ( D  -  -u C
) ) )
159, 11, 10, 13, 14syl31anc 1329 . . 3  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( C  -  B )  \/  A  ||  ( C  -  -u B ) ) )  ->  ( A  ||  ( D  -  C
)  \/  A  ||  ( D  -  -u C
) ) )
16 simpr 477 . . 3  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( C  -  B )  \/  A  ||  ( C  -  -u B ) ) )  ->  ( A  ||  ( C  -  B
)  \/  A  ||  ( C  -  -u B
) ) )
17 acongtr 37545 . . 3  |-  ( ( ( A  e.  ZZ  /\  D  e.  ZZ )  /\  ( C  e.  ZZ  /\  B  e.  ZZ )  /\  (
( A  ||  ( D  -  C )  \/  A  ||  ( D  -  -u C ) )  /\  ( A  ||  ( C  -  B
)  \/  A  ||  ( C  -  -u B
) ) ) )  ->  ( A  ||  ( D  -  B
)  \/  A  ||  ( D  -  -u B
) ) )
189, 10, 11, 12, 15, 16, 17syl222anc 1342 . 2  |-  ( ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  /\  ( A  ||  ( C  -  B )  \/  A  ||  ( C  -  -u B ) ) )  ->  ( A  ||  ( D  -  B
)  \/  A  ||  ( D  -  -u B
) ) )
198, 18impbida 877 1  |-  ( ( ( A  e.  ZZ  /\  B  e.  ZZ )  /\  ( C  e.  ZZ  /\  D  e.  ZZ )  /\  ( A  ||  ( C  -  D )  \/  A  ||  ( C  -  -u D
) ) )  -> 
( ( A  ||  ( D  -  B
)  \/  A  ||  ( D  -  -u B
) )  <->  ( A  ||  ( C  -  B
)  \/  A  ||  ( C  -  -u B
) ) ) )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4    <-> wb 196    \/ wo 383    /\ wa 384    /\ w3a 1037    e. wcel 1990   class class class wbr 4653  (class class class)co 6650    - cmin 10266   -ucneg 10267   ZZcz 11377    || cdvds 14983
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-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  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-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-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-om 7066  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-er 7742  df-en 7956  df-dom 7957  df-sdom 7958  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-sub 10268  df-neg 10269  df-nn 11021  df-n0 11293  df-z 11378  df-dvds 14984
This theorem is referenced by:  jm2.25  37566
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