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Theorem f1oeq123d 6603
Description: Equality deduction for one-to-one onto functions. (Contributed by Mario Carneiro, 27-Jan-2017.)
Hypotheses
Ref Expression
f1eq123d.1 (𝜑𝐹 = 𝐺)
f1eq123d.2 (𝜑𝐴 = 𝐵)
f1eq123d.3 (𝜑𝐶 = 𝐷)
Assertion
Ref Expression
f1oeq123d (𝜑 → (𝐹:𝐴1-1-onto𝐶𝐺:𝐵1-1-onto𝐷))

Proof of Theorem f1oeq123d
StepHypRef Expression
1 f1eq123d.1 . . 3 (𝜑𝐹 = 𝐺)
2 f1oeq1 6597 . . 3 (𝐹 = 𝐺 → (𝐹:𝐴1-1-onto𝐶𝐺:𝐴1-1-onto𝐶))
31, 2syl 17 . 2 (𝜑 → (𝐹:𝐴1-1-onto𝐶𝐺:𝐴1-1-onto𝐶))
4 f1eq123d.2 . . 3 (𝜑𝐴 = 𝐵)
5 f1oeq2 6598 . . 3 (𝐴 = 𝐵 → (𝐺:𝐴1-1-onto𝐶𝐺:𝐵1-1-onto𝐶))
64, 5syl 17 . 2 (𝜑 → (𝐺:𝐴1-1-onto𝐶𝐺:𝐵1-1-onto𝐶))
7 f1eq123d.3 . . 3 (𝜑𝐶 = 𝐷)
8 f1oeq3 6599 . . 3 (𝐶 = 𝐷 → (𝐺:𝐵1-1-onto𝐶𝐺:𝐵1-1-onto𝐷))
97, 8syl 17 . 2 (𝜑 → (𝐺:𝐵1-1-onto𝐶𝐺:𝐵1-1-onto𝐷))
103, 6, 93bitrd 306 1 (𝜑 → (𝐹:𝐴1-1-onto𝐶𝐺:𝐵1-1-onto𝐷))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 207   = wceq 1528  1-1-ontowf1o 6347
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1787  ax-4 1801  ax-5 1902  ax-6 1961  ax-7 2006  ax-8 2107  ax-9 2115  ax-10 2136  ax-11 2151  ax-12 2167  ax-ext 2790
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 842  df-3an 1081  df-tru 1531  df-ex 1772  df-nf 1776  df-sb 2061  df-clab 2797  df-cleq 2811  df-clel 2890  df-nfc 2960  df-rab 3144  df-v 3494  df-dif 3936  df-un 3938  df-in 3940  df-ss 3949  df-nul 4289  df-if 4464  df-sn 4558  df-pr 4560  df-op 4564  df-br 5058  df-opab 5120  df-rel 5555  df-cnv 5556  df-co 5557  df-dm 5558  df-rn 5559  df-fun 6350  df-fn 6351  df-f 6352  df-f1 6353  df-fo 6354  df-f1o 6355
This theorem is referenced by:  f1oprswap  6651  f1oprg  6652  f1ossf1o  6882  cnfcom  9151  ackbij2lem2  9650  s2f1o  14266  s4f1o  14268  idffth  17191  ressffth  17196  symg1bas  18453  symg2bas  18455  symgfixels  18491  symgfixelsi  18492  rhmf1o  19413  mat1f1o  21015  ushgredgedg  26938  ushgredgedgloop  26940  trlreslem  27408  wlknwwlksnbij  27593  wwlksnextbij  27607  clwlknf1oclwwlkn  27790  eupth0  27920  eupthp1  27922  foresf1o  30192  f1ocnt  30451  symgcom  30654  cycpmcl  30685  cycpmconjslem2  30724  dimkerim  30922  indf1ofs  31184  eulerpartgbij  31529  eulerpartlemn  31538  reprpmtf1o  31796  poimirlem16  34789  poimirlem17  34790  poimirlem19  34792  poimirlem20  34793  poimirlem28  34801  wessf1ornlem  41321  disjf1o  41328  ssnnf1octb  41332  sge0fodjrnlem  42575  f1oresf1orab  43365  isomgr  43865  rnghmf1o  44102
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