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Theorem idaf 17985
Description: The identity arrow function is a function from objects to arrows. (Contributed by Mario Carneiro, 11-Jan-2017.)
Hypotheses
Ref Expression
idafval.i 𝐼 = (Ida𝐶)
idafval.b 𝐵 = (Base‘𝐶)
idafval.c (𝜑𝐶 ∈ Cat)
idaf.a 𝐴 = (Arrow‘𝐶)
Assertion
Ref Expression
idaf (𝜑𝐼:𝐵𝐴)

Proof of Theorem idaf
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 otex 5411 . . 3 𝑥, 𝑥, ((Id‘𝐶)‘𝑥)⟩ ∈ V
21a1i 11 . 2 ((𝜑𝑥𝐵) → ⟨𝑥, 𝑥, ((Id‘𝐶)‘𝑥)⟩ ∈ V)
3 idafval.i . . 3 𝐼 = (Ida𝐶)
4 idafval.b . . 3 𝐵 = (Base‘𝐶)
5 idafval.c . . 3 (𝜑𝐶 ∈ Cat)
6 eqid 2734 . . 3 (Id‘𝐶) = (Id‘𝐶)
73, 4, 5, 6idafval 17979 . 2 (𝜑𝐼 = (𝑥𝐵 ↦ ⟨𝑥, 𝑥, ((Id‘𝐶)‘𝑥)⟩))
8 idaf.a . . . 4 𝐴 = (Arrow‘𝐶)
9 eqid 2734 . . . 4 (Homa𝐶) = (Homa𝐶)
108, 9homarw 17968 . . 3 (𝑥(Homa𝐶)𝑥) ⊆ 𝐴
115adantr 480 . . . 4 ((𝜑𝑥𝐵) → 𝐶 ∈ Cat)
12 simpr 484 . . . 4 ((𝜑𝑥𝐵) → 𝑥𝐵)
133, 4, 11, 12, 9idahom 17982 . . 3 ((𝜑𝑥𝐵) → (𝐼𝑥) ∈ (𝑥(Homa𝐶)𝑥))
1410, 13sselid 3929 . 2 ((𝜑𝑥𝐵) → (𝐼𝑥) ∈ 𝐴)
152, 7, 14fmpt2d 7067 1 (𝜑𝐼:𝐵𝐴)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395   = wceq 1541  wcel 2113  Vcvv 3438  cotp 4586  wf 6486  cfv 6490  (class class class)co 7356  Basecbs 17134  Catccat 17585  Idccid 17586  Arrowcarw 17944  Homachoma 17945  Idacida 17975
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-10 2146  ax-11 2162  ax-12 2182  ax-ext 2706  ax-rep 5222  ax-sep 5239  ax-nul 5249  ax-pow 5308  ax-pr 5375  ax-un 7678
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2537  df-eu 2567  df-clab 2713  df-cleq 2726  df-clel 2809  df-nfc 2883  df-ne 2931  df-ral 3050  df-rex 3059  df-rmo 3348  df-reu 3349  df-rab 3398  df-v 3440  df-sbc 3739  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4284  df-if 4478  df-pw 4554  df-sn 4579  df-pr 4581  df-op 4585  df-ot 4587  df-uni 4862  df-iun 4946  df-br 5097  df-opab 5159  df-mpt 5178  df-id 5517  df-xp 5628  df-rel 5629  df-cnv 5630  df-co 5631  df-dm 5632  df-rn 5633  df-res 5634  df-ima 5635  df-iota 6446  df-fun 6492  df-fn 6493  df-f 6494  df-f1 6495  df-fo 6496  df-f1o 6497  df-fv 6498  df-riota 7313  df-ov 7359  df-cat 17589  df-cid 17590  df-homa 17948  df-arw 17949  df-ida 17977
This theorem is referenced by: (None)
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