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Theorem cicfval 17872
Description: The set of isomorphic objects of the category 𝑐. (Contributed by AV, 4-Apr-2020.)
Assertion
Ref Expression
cicfval (𝐶 ∈ Cat → ( ≃𝑐𝐶) = ((Iso‘𝐶) supp ∅))

Proof of Theorem cicfval
Dummy variable 𝑐 is distinct from all other variables.
StepHypRef Expression
1 df-cic 17871 . 2 𝑐 = (𝑐 ∈ Cat ↦ ((Iso‘𝑐) supp ∅))
2 fveq2 6885 . . 3 (𝑐 = 𝐶 → (Iso‘𝑐) = (Iso‘𝐶))
32oveq1d 7431 . 2 (𝑐 = 𝐶 → ((Iso‘𝑐) supp ∅) = ((Iso‘𝐶) supp ∅))
4 id 23 . 2 (𝐶 ∈ Cat → 𝐶 ∈ Cat)
5 ovexd 7451 . 2 (𝐶 ∈ Cat → ((Iso‘𝐶) supp ∅) ∈ V)
61, 3, 4, 5fvmptd3 7017 1 (𝐶 ∈ Cat → ( ≃𝑐𝐶) = ((Iso‘𝐶) supp ∅))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4   = wceq 1570  wcel 2146  Vcvv 3457  c0 4286  cfv 6540  (class class class)co 7416   supp csupp 8158  Catccat 17738  Isociso 17821  𝑐 ccic 17870
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 1943  ax-6 2000  ax-7 2041  ax-8 2148  ax-9 2156  ax-10 2179  ax-11 2195  ax-12 2216  ax-ext 2737  ax-sep 5259  ax-nul 5271  ax-pr 5406
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-nf 1817  df-sb 2100  df-mo 2569  df-eu 2599  df-clab 2744  df-cleq 2757  df-clel 2840  df-nfc 2914  df-ne 2961  df-ral 3082  df-rex 3092  df-rab 3419  df-v 3459  df-dif 3909  df-un 3911  df-in 3913  df-ss 3923  df-nul 4287  df-if 4490  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4875  df-br 5112  df-opab 5176  df-mpt 5195  df-id 5558  df-xp 5669  df-rel 5670  df-cnv 5671  df-co 5672  df-dm 5673  df-iota 6496  df-fun 6542  df-fv 6548  df-ov 7419  df-cic 17871
This theorem is used by:  brcic  17873  ciclcl  17877  cicrcl  17878  cicer  17881  relcic  49856
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