Theorem homfeqval 17621

Description: Value of the functionalized Hom-set operation. (Contributed by Mario Carneiro, 4-Jan-2017.)

Hypotheses

Ref	Expression
homfeqval.b	⊢ 𝐵 = (Base‘𝐶)
homfeqval.h	⊢ 𝐻 = (Hom ‘𝐶)
homfeqval.j	⊢ 𝐽 = (Hom ‘𝐷)
homfeqval.1	⊢ (𝜑 → (Homf ‘𝐶) = (Homf ‘𝐷))
homfeqval.x	⊢ (𝜑 → 𝑋 ∈ 𝐵)
homfeqval.y	⊢ (𝜑 → 𝑌 ∈ 𝐵)

Assertion

Ref	Expression
homfeqval	⊢ (𝜑 → (𝑋𝐻𝑌) = (𝑋𝐽𝑌))

Proof of Theorem homfeqval

Step	Hyp	Ref	Expression
1		homfeqval.1	. . 3 ⊢ (𝜑 → (Homf ‘𝐶) = (Homf ‘𝐷))
2	1	oveqd 7370	. 2 ⊢ (𝜑 → (𝑋(Homf ‘𝐶)𝑌) = (𝑋(Homf ‘𝐷)𝑌))
3		eqid 2729	. . 3 ⊢ (Homf ‘𝐶) = (Homf ‘𝐶)
4		homfeqval.b	. . 3 ⊢ 𝐵 = (Base‘𝐶)
5		homfeqval.h	. . 3 ⊢ 𝐻 = (Hom ‘𝐶)
6		homfeqval.x	. . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐵)
7		homfeqval.y	. . 3 ⊢ (𝜑 → 𝑌 ∈ 𝐵)
8	3, 4, 5, 6, 7	homfval 17616	. 2 ⊢ (𝜑 → (𝑋(Homf ‘𝐶)𝑌) = (𝑋𝐻𝑌))
9		eqid 2729	. . 3 ⊢ (Homf ‘𝐷) = (Homf ‘𝐷)
10		eqid 2729	. . 3 ⊢ (Base‘𝐷) = (Base‘𝐷)
11		homfeqval.j	. . 3 ⊢ 𝐽 = (Hom ‘𝐷)
12	1	homfeqbas 17620	. . . . 5 ⊢ (𝜑 → (Base‘𝐶) = (Base‘𝐷))
13	4, 12	eqtrid 2776	. . . 4 ⊢ (𝜑 → 𝐵 = (Base‘𝐷))
14	6, 13	eleqtrd 2830	. . 3 ⊢ (𝜑 → 𝑋 ∈ (Base‘𝐷))
15	7, 13	eleqtrd 2830	. . 3 ⊢ (𝜑 → 𝑌 ∈ (Base‘𝐷))
16	9, 10, 11, 14, 15	homfval 17616	. 2 ⊢ (𝜑 → (𝑋(Homf ‘𝐷)𝑌) = (𝑋𝐽𝑌))
17	2, 8, 16	3eqtr3d 2772	1 ⊢ (𝜑 → (𝑋𝐻𝑌) = (𝑋𝐽𝑌))

Syntax hints:   → wi 4   = wceq 1540   ∈ wcel 2109  ‘cfv 6486  (class class class)co 7353  Basecbs 17138  Hom chom 17190  Hom_f chomf 17590

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-rep 5221  ax-sep 5238  ax-nul 5248  ax-pow 5307  ax-pr 5374  ax-un 7675

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-ral 3045  df-rex 3054  df-reu 3346  df-rab 3397  df-v 3440  df-sbc 3745  df-csb 3854  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-nul 4287  df-if 4479  df-pw 4555  df-sn 4580  df-pr 4582  df-op 4586  df-uni 4862  df-iun 4946  df-br 5096  df-opab 5158  df-mpt 5177  df-id 5518  df-xp 5629  df-rel 5630  df-cnv 5631  df-co 5632  df-dm 5633  df-rn 5634  df-res 5635  df-ima 5636  df-iota 6442  df-fun 6488  df-fn 6489  df-f 6490  df-f1 6491  df-fo 6492  df-f1o 6493  df-fv 6494  df-ov 7356  df-oprab 7357  df-mpo 7358  df-1st 7931  df-2nd 7932  df-homf 17594

This theorem is referenced by:  comfeq  17630  comfeqval  17632  catpropd  17633  cidpropd  17634  monpropd  17662  funcpropd  17827  fullpropd  17847  natpropd  17904  xpcpropd  18132  curfpropd  18157  hofpropd  18191  sectpropdlem  49022  idfu2nda  49089  fthcomf  49143  uppropd  49167  oppcthinco  49425  thincpropd  49428