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Theorem funcnvcnv 6583
Description: The double converse of a function is a function. (Contributed by NM, 21-Sep-2004.)
Assertion
Ref Expression
funcnvcnv (Fun 𝐴 → Fun 𝐴)

Proof of Theorem funcnvcnv
StepHypRef Expression
1 cnvcnvss 6175 . 2 𝐴𝐴
2 funss 6535 . 2 (𝐴𝐴 → (Fun 𝐴 → Fun 𝐴))
31, 2ax-mp 5 1 (Fun 𝐴 → Fun 𝐴)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wss 3902  ccnv 5642  Fun wfun 6510
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1814  ax-4 1828  ax-5 1929  ax-6 1986  ax-7 2027  ax-8 2143  ax-9 2151  ax-ext 2733  ax-sep 5243  ax-pr 5387
This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1099  df-tru 1562  df-fal 1572  df-ex 1799  df-sb 2090  df-clab 2740  df-cleq 2753  df-clel 2836  df-rab 3414  df-v 3455  df-dif 3905  df-un 3907  df-in 3909  df-ss 3919  df-nul 4284  df-if 4478  df-sn 4580  df-pr 4582  df-op 4586  df-br 5098  df-opab 5160  df-xp 5649  df-rel 5650  df-cnv 5651  df-co 5652  df-res 5655  df-fun 6518
This theorem is referenced by:  funcnvres2  6596  inpreima  7040  difpreima  7041  f1oresrab  7104  sbthlem8  9060  fin1a2lem7  10357  cnclima  23316  iscncl  23317  qtopcld  23761  qtoprest  23765  qtopcmap  23767  rnelfmlem  24000  fmfnfmlem3  24004  mbfimaicc  25681  ismbf3d  25704  i1fd  25731  gsummpt2co  33189
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