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Theorem funALTVeq 36738
Description: Equality theorem for function predicate. (Contributed by NM, 16-Aug-1994.)
Assertion
Ref Expression
funALTVeq (𝐴 = 𝐵 → ( FunALTV 𝐴 ↔ FunALTV 𝐵))

Proof of Theorem funALTVeq
StepHypRef Expression
1 eqimss2 3974 . . 3 (𝐴 = 𝐵𝐵𝐴)
2 funALTVss 36737 . . 3 (𝐵𝐴 → ( FunALTV 𝐴 → FunALTV 𝐵))
31, 2syl 17 . 2 (𝐴 = 𝐵 → ( FunALTV 𝐴 → FunALTV 𝐵))
4 eqimss 3973 . . 3 (𝐴 = 𝐵𝐴𝐵)
5 funALTVss 36737 . . 3 (𝐴𝐵 → ( FunALTV 𝐵 → FunALTV 𝐴))
64, 5syl 17 . 2 (𝐴 = 𝐵 → ( FunALTV 𝐵 → FunALTV 𝐴))
73, 6impbid 211 1 (𝐴 = 𝐵 → ( FunALTV 𝐴 ↔ FunALTV 𝐵))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205   = wceq 1539  wss 3883   FunALTV wfunALTV 36291
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-sep 5218  ax-nul 5225  ax-pr 5347
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-clab 2716  df-cleq 2730  df-clel 2817  df-ral 3068  df-rex 3069  df-rab 3072  df-v 3424  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4254  df-if 4457  df-sn 4559  df-pr 4561  df-op 4565  df-br 5071  df-opab 5133  df-id 5480  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-coss 36464  df-cnvrefrel 36570  df-funALTV 36720
This theorem is referenced by:  funALTVeqi  36739  funALTVeqd  36740
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