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Theorem cicfval 17886
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 17885 . 2 𝑐 = (𝑐 ∈ Cat ↦ ((Iso‘𝑐) supp ∅))
2 fveq2 6878 . . 3 (𝑐 = 𝐶 → (Iso‘𝑐) = (Iso‘𝐶))
32oveq1d 7428 . 2 (𝑐 = 𝐶 → ((Iso‘𝑐) supp ∅) = ((Iso‘𝐶) supp ∅))
4 id 23 . 2 (𝐶 ∈ Cat → 𝐶 ∈ Cat)
5 ovexd 7448 . 2 (𝐶 ∈ Cat → ((Iso‘𝐶) supp ∅) ∈ V)
61, 3, 4, 5fvmptd3 7010 1 (𝐶 ∈ Cat → ( ≃𝑐𝐶) = ((Iso‘𝐶) supp ∅))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4   = wceq 1570  wcel 2145  Vcvv 3450  c0 4279  cfv 6533  (class class class)co 7413   supp csupp 8158  Catccat 17752  Isociso 17835  𝑐 ccic 17884
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 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2732  ax-sep 5251  ax-nul 5263  ax-pr 5398
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 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ne 2956  df-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-br 5104  df-opab 5168  df-mpt 5187  df-id 5550  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-iota 6489  df-fun 6535  df-fv 6541  df-ov 7416  df-cic 17885
This theorem is used by:  brcic  17887  ciclcl  17891  cicrcl  17892  cicer  17895  relcic  49971
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