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Theorem funcnvs1 15095
Description: The converse of a singleton word is a function. (Contributed by AV, 22-Jan-2021.)
Assertion
Ref Expression
funcnvs1 Fun ◡⟨“𝐴”⟩

Proof of Theorem funcnvs1
StepHypRef Expression
1 funcnvsn 6615 . 2 Fun ◡{⟨0, ( I ‘𝐴)⟩}
2 df-s1 14773 . . . 4 ⟨“𝐴”⟩ = {⟨0, ( I ‘𝐴)⟩}
32cnveqi 5860 . . 3 ◡⟨“𝐴”⟩ = ◡{⟨0, ( I ‘𝐴)⟩}
43funeqi 6583 . 2 (Fun ◡⟨“𝐴”⟩ ↔ Fun ◡{⟨0, ( I ‘𝐴)⟩})
51, 4mpbir 234 1 Fun ◡⟨“𝐴”⟩
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  {csn 4588  ⟨cop 4838   I cid 5550  ◡ccnv 5655  Fun wfun 6555  ‘cfv 6561  0cc0 11230  ⟨“cs1 14772
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-ext 2735  ax-sep 5253  ax-pr 5396
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2102  df-mo 2567  df-clab 2742  df-cleq 2755  df-clel 2839  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-sn 4589  df-pr 4591  df-op 4839  df-br 5107  df-opab 5172  df-id 5551  df-xp 5662  df-rel 5663  df-cnv 5664  df-co 5665  df-fun 6563  df-s1 14773
This theorem is used by:  uhgrwkspthlem1  30372  1trld  30766
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