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Theorem fneq12d 4991
 Description: Equality deduction for function predicate with domain. (Contributed by NM, 26-Jun-2011.)
Hypotheses
Ref Expression
fneq12d.1
fneq12d.2
Assertion
Ref Expression
fneq12d

Proof of Theorem fneq12d
StepHypRef Expression
1 fneq12d.1 . . 3
21fneq1d 4989 . 2
3 fneq12d.2 . . 3
43fneq2d 4990 . 2
52, 4bitrd 177 1
 Colors of variables: wff set class Syntax hints:   wi 4   wb 98   wceq 1243   wfn 4897 This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-io 630  ax-5 1336  ax-7 1337  ax-gen 1338  ax-ie1 1382  ax-ie2 1383  ax-8 1395  ax-10 1396  ax-11 1397  ax-i12 1398  ax-bndl 1399  ax-4 1400  ax-17 1419  ax-i9 1423  ax-ial 1427  ax-i5r 1428  ax-ext 2022 This theorem depends on definitions:  df-bi 110  df-3an 887  df-tru 1246  df-nf 1350  df-sb 1646  df-clab 2027  df-cleq 2033  df-clel 2036  df-nfc 2167  df-v 2559  df-un 2922  df-in 2924  df-ss 2931  df-sn 3381  df-pr 3382  df-op 3384  df-br 3765  df-opab 3819  df-rel 4352  df-cnv 4353  df-co 4354  df-dm 4355  df-fun 4904  df-fn 4905 This theorem is referenced by:  fneq12  4992  tfrlemi1  5946
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