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Theorem tposeq 6518
Description: Equality theorem for transposition. (Contributed by Mario Carneiro, 10-Sep-2015.)
Assertion
Ref Expression
tposeq  |-  ( F  =  G  -> tpos  F  = tpos 
G )

Proof of Theorem tposeq
StepHypRef Expression
1 eqimss 3302 . . 3  |-  ( F  =  G  ->  F  C_  G )
2 tposss 6517 . . 3  |-  ( F 
C_  G  -> tpos  F  C_ tpos  G )
31, 2syl 14 . 2  |-  ( F  =  G  -> tpos  F  C_ tpos  G )
4 eqimss2 3303 . . 3  |-  ( F  =  G  ->  G  C_  F )
5 tposss 6517 . . 3  |-  ( G 
C_  F  -> tpos  G  C_ tpos  F )
64, 5syl 14 . 2  |-  ( F  =  G  -> tpos  G  C_ tpos  F )
73, 6eqssd 3265 1  |-  ( F  =  G  -> tpos  F  = tpos 
G )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    = wceq 1402    C_ wss 3220  tpos ctpos 6515
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4249  ax-pow 4311  ax-pr 4346
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-v 2823  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-br 4131  df-opab 4193  df-mpt 4194  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-res 4786  df-tpos 6516
This theorem is used by:  tposeqd  6519  tposeqi  6548
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