Theorem hofcllem 18447

Description: Lemma for hofcl 18448. (Contributed by Mario Carneiro, 15-Jan-2017.)

Hypotheses

Ref	Expression
hofcl.m	⊢ 𝑀 = (HomF‘𝐶)
hofcl.o	⊢ 𝑂 = (oppCat‘𝐶)
hofcl.d	⊢ 𝐷 = (SetCat‘𝑈)
hofcl.c	⊢ (𝜑 → 𝐶 ∈ Cat)
hofcl.u	⊢ (𝜑 → 𝑈 ∈ 𝑉)
hofcl.h	⊢ (𝜑 → ran (Homf ‘𝐶) ⊆ 𝑈)
hofcllem.b	⊢ 𝐵 = (Base‘𝐶)
hofcllem.h	⊢ 𝐻 = (Hom ‘𝐶)
hofcllem.x	⊢ (𝜑 → 𝑋 ∈ 𝐵)
hofcllem.y	⊢ (𝜑 → 𝑌 ∈ 𝐵)
hofcllem.z	⊢ (𝜑 → 𝑍 ∈ 𝐵)
hofcllem.w	⊢ (𝜑 → 𝑊 ∈ 𝐵)
hofcllem.s	⊢ (𝜑 → 𝑆 ∈ 𝐵)
hofcllem.t	⊢ (𝜑 → 𝑇 ∈ 𝐵)
hofcllem.m	⊢ (𝜑 → 𝐾 ∈ (𝑍𝐻𝑋))
hofcllem.n	⊢ (𝜑 → 𝐿 ∈ (𝑌𝐻𝑊))
hofcllem.p	⊢ (𝜑 → 𝑃 ∈ (𝑆𝐻𝑍))
hofcllem.q	⊢ (𝜑 → 𝑄 ∈ (𝑊𝐻𝑇))

Assertion

Ref	Expression
hofcllem	⊢ (𝜑 → ((𝐾(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑋)𝑃)(⟨𝑋, 𝑌⟩(2nd ‘𝑀)⟨𝑆, 𝑇⟩)(𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿)) = ((𝑃(⟨𝑍, 𝑊⟩(2nd ‘𝑀)⟨𝑆, 𝑇⟩)𝑄)(⟨(𝑋𝐻𝑌), (𝑍𝐻𝑊)⟩(comp‘𝐷)(𝑆𝐻𝑇))(𝐾(⟨𝑋, 𝑌⟩(2nd ‘𝑀)⟨𝑍, 𝑊⟩)𝐿)))

Proof of Theorem hofcllem

Dummy variables 𝑓 𝑔 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		hofcllem.b	. . . . 5 ⊢ 𝐵 = (Base‘𝐶)
2		hofcllem.h	. . . . 5 ⊢ 𝐻 = (Hom ‘𝐶)
3		eqid 2763	. . . . 5 ⊢ (comp‘𝐶) = (comp‘𝐶)
4		hofcl.c	. . . . . 6 ⊢ (𝜑 → 𝐶 ∈ Cat)
5	4	adantr 486	. . . . 5 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → 𝐶 ∈ Cat)
6		hofcllem.s	. . . . . 6 ⊢ (𝜑 → 𝑆 ∈ 𝐵)
7	6	adantr 486	. . . . 5 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → 𝑆 ∈ 𝐵)
8		hofcllem.z	. . . . . 6 ⊢ (𝜑 → 𝑍 ∈ 𝐵)
9	8	adantr 486	. . . . 5 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → 𝑍 ∈ 𝐵)
10		hofcllem.x	. . . . . 6 ⊢ (𝜑 → 𝑋 ∈ 𝐵)
11	10	adantr 486	. . . . 5 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → 𝑋 ∈ 𝐵)
12		hofcllem.p	. . . . . 6 ⊢ (𝜑 → 𝑃 ∈ (𝑆𝐻𝑍))
13	12	adantr 486	. . . . 5 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → 𝑃 ∈ (𝑆𝐻𝑍))
14		hofcllem.m	. . . . . 6 ⊢ (𝜑 → 𝐾 ∈ (𝑍𝐻𝑋))
15	14	adantr 486	. . . . 5 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → 𝐾 ∈ (𝑍𝐻𝑋))
16		hofcllem.t	. . . . . 6 ⊢ (𝜑 → 𝑇 ∈ 𝐵)
17	16	adantr 486	. . . . 5 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → 𝑇 ∈ 𝐵)
18		hofcllem.y	. . . . . . 7 ⊢ (𝜑 → 𝑌 ∈ 𝐵)
19	18	adantr 486	. . . . . 6 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → 𝑌 ∈ 𝐵)
20		simpr 490	. . . . . 6 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → 𝑓 ∈ (𝑋𝐻𝑌))
21		hofcllem.w	. . . . . . . 8 ⊢ (𝜑 → 𝑊 ∈ 𝐵)
22		hofcllem.n	. . . . . . . 8 ⊢ (𝜑 → 𝐿 ∈ (𝑌𝐻𝑊))
23		hofcllem.q	. . . . . . . 8 ⊢ (𝜑 → 𝑄 ∈ (𝑊𝐻𝑇))
24	1, 2, 3, 4, 18, 21, 16, 22, 23	catcocl 17874	. . . . . . 7 ⊢ (𝜑 → (𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿) ∈ (𝑌𝐻𝑇))
25	24	adantr 486	. . . . . 6 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → (𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿) ∈ (𝑌𝐻𝑇))
26	1, 2, 3, 5, 11, 19, 17, 20, 25	catcocl 17874	. . . . 5 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → ((𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿)(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑇)𝑓) ∈ (𝑋𝐻𝑇))
27	1, 2, 3, 5, 7, 9, 11, 13, 15, 17, 26	catass 17875	. . . 4 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → ((((𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿)(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑇)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑇)𝐾)(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃) = (((𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿)(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑇)𝑓)(⟨𝑆, 𝑋⟩(comp‘𝐶)𝑇)(𝐾(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑋)𝑃)))
28	21	adantr 486	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → 𝑊 ∈ 𝐵)
29	22	adantr 486	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → 𝐿 ∈ (𝑌𝐻𝑊))
30	23	adantr 486	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → 𝑄 ∈ (𝑊𝐻𝑇))
31	1, 2, 3, 5, 11, 19, 28, 20, 29, 17, 30	catass 17875	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → ((𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿)(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑇)𝑓) = (𝑄(⟨𝑋, 𝑊⟩(comp‘𝐶)𝑇)(𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)))
32	31	oveq1d 7445	. . . . . 6 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → (((𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿)(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑇)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑇)𝐾) = ((𝑄(⟨𝑋, 𝑊⟩(comp‘𝐶)𝑇)(𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓))(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑇)𝐾))
33	1, 2, 3, 5, 11, 19, 28, 20, 29	catcocl 17874	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → (𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓) ∈ (𝑋𝐻𝑊))
34	1, 2, 3, 5, 9, 11, 28, 15, 33, 17, 30	catass 17875	. . . . . 6 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → ((𝑄(⟨𝑋, 𝑊⟩(comp‘𝐶)𝑇)(𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓))(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑇)𝐾) = (𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾)))
35	32, 34	eqtrd 2798	. . . . 5 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → (((𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿)(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑇)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑇)𝐾) = (𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾)))
36	35	oveq1d 7445	. . . 4 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → ((((𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿)(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑇)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑇)𝐾)(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃) = ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾))(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃))
37	27, 36	eqtr3d 2800	. . 3 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → (((𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿)(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑇)𝑓)(⟨𝑆, 𝑋⟩(comp‘𝐶)𝑇)(𝐾(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑋)𝑃)) = ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾))(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃))
38	37	mpteq2dva 5201	. 2 ⊢ (𝜑 → (𝑓 ∈ (𝑋𝐻𝑌) ↦ (((𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿)(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑇)𝑓)(⟨𝑆, 𝑋⟩(comp‘𝐶)𝑇)(𝐾(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑋)𝑃))) = (𝑓 ∈ (𝑋𝐻𝑌) ↦ ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾))(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃)))
39		hofcl.m	. . 3 ⊢ 𝑀 = (HomF‘𝐶)
40	1, 2, 3, 4, 6, 8, 10, 12, 14	catcocl 17874	. . 3 ⊢ (𝜑 → (𝐾(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑋)𝑃) ∈ (𝑆𝐻𝑋))
41	39, 4, 1, 2, 10, 18, 6, 16, 3, 40, 24	hof2val 18445	. 2 ⊢ (𝜑 → ((𝐾(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑋)𝑃)(⟨𝑋, 𝑌⟩(2nd ‘𝑀)⟨𝑆, 𝑇⟩)(𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿)) = (𝑓 ∈ (𝑋𝐻𝑌) ↦ (((𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿)(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑇)𝑓)(⟨𝑆, 𝑋⟩(comp‘𝐶)𝑇)(𝐾(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑋)𝑃))))
42	39, 4, 1, 2, 8, 21, 6, 16, 3, 12, 23	hof2val 18445	. . . 4 ⊢ (𝜑 → (𝑃(⟨𝑍, 𝑊⟩(2nd ‘𝑀)⟨𝑆, 𝑇⟩)𝑄) = (𝑔 ∈ (𝑍𝐻𝑊) ↦ ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)𝑔)(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃)))
43	39, 4, 1, 2, 10, 18, 8, 21, 3, 14, 22	hof2val 18445	. . . 4 ⊢ (𝜑 → (𝐾(⟨𝑋, 𝑌⟩(2nd ‘𝑀)⟨𝑍, 𝑊⟩)𝐿) = (𝑓 ∈ (𝑋𝐻𝑌) ↦ ((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾)))
44	42, 43	oveq12d 7448	. . 3 ⊢ (𝜑 → ((𝑃(⟨𝑍, 𝑊⟩(2nd ‘𝑀)⟨𝑆, 𝑇⟩)𝑄)(⟨(𝑋𝐻𝑌), (𝑍𝐻𝑊)⟩(comp‘𝐷)(𝑆𝐻𝑇))(𝐾(⟨𝑋, 𝑌⟩(2nd ‘𝑀)⟨𝑍, 𝑊⟩)𝐿)) = ((𝑔 ∈ (𝑍𝐻𝑊) ↦ ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)𝑔)(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃))(⟨(𝑋𝐻𝑌), (𝑍𝐻𝑊)⟩(comp‘𝐷)(𝑆𝐻𝑇))(𝑓 ∈ (𝑋𝐻𝑌) ↦ ((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾))))
45		hofcl.d	. . . 4 ⊢ 𝐷 = (SetCat‘𝑈)
46		hofcl.u	. . . 4 ⊢ (𝜑 → 𝑈 ∈ 𝑉)
47		eqid 2763	. . . 4 ⊢ (comp‘𝐷) = (comp‘𝐷)
48		eqid 2763	. . . . . 6 ⊢ (Homf ‘𝐶) = (Homf ‘𝐶)
49	48, 1, 2, 10, 18	homfval 17881	. . . . 5 ⊢ (𝜑 → (𝑋(Homf ‘𝐶)𝑌) = (𝑋𝐻𝑌))
50	48, 1	homffn 17882	. . . . . . . 8 ⊢ (Homf ‘𝐶) Fn (𝐵 × 𝐵)
51	50	a1i 11	. . . . . . 7 ⊢ (𝜑 → (Homf ‘𝐶) Fn (𝐵 × 𝐵))
52		hofcl.h	. . . . . . 7 ⊢ (𝜑 → ran (Homf ‘𝐶) ⊆ 𝑈)
53		df-f 6551	. . . . . . 7 ⊢ ((Homf ‘𝐶):(𝐵 × 𝐵)⟶𝑈 ↔ ((Homf ‘𝐶) Fn (𝐵 × 𝐵) ∧ ran (Homf ‘𝐶) ⊆ 𝑈))
54	51, 52, 53	sylanbrc 595	. . . . . 6 ⊢ (𝜑 → (Homf ‘𝐶):(𝐵 × 𝐵)⟶𝑈)
55	54, 10, 18	fovcdmd 7603	. . . . 5 ⊢ (𝜑 → (𝑋(Homf ‘𝐶)𝑌) ∈ 𝑈)
56	49, 55	eqeltrrd 2865	. . . 4 ⊢ (𝜑 → (𝑋𝐻𝑌) ∈ 𝑈)
57	48, 1, 2, 8, 21	homfval 17881	. . . . 5 ⊢ (𝜑 → (𝑍(Homf ‘𝐶)𝑊) = (𝑍𝐻𝑊))
58	54, 8, 21	fovcdmd 7603	. . . . 5 ⊢ (𝜑 → (𝑍(Homf ‘𝐶)𝑊) ∈ 𝑈)
59	57, 58	eqeltrrd 2865	. . . 4 ⊢ (𝜑 → (𝑍𝐻𝑊) ∈ 𝑈)
60	48, 1, 2, 6, 16	homfval 17881	. . . . 5 ⊢ (𝜑 → (𝑆(Homf ‘𝐶)𝑇) = (𝑆𝐻𝑇))
61	54, 6, 16	fovcdmd 7603	. . . . 5 ⊢ (𝜑 → (𝑆(Homf ‘𝐶)𝑇) ∈ 𝑈)
62	60, 61	eqeltrrd 2865	. . . 4 ⊢ (𝜑 → (𝑆𝐻𝑇) ∈ 𝑈)
63	1, 2, 3, 5, 9, 11, 28, 15, 33	catcocl 17874	. . . . 5 ⊢ ((𝜑 ∧ 𝑓 ∈ (𝑋𝐻𝑌)) → ((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾) ∈ (𝑍𝐻𝑊))
64	63	fmpttd 7126	. . . 4 ⊢ (𝜑 → (𝑓 ∈ (𝑋𝐻𝑌) ↦ ((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾)):(𝑋𝐻𝑌)⟶(𝑍𝐻𝑊))
65	4	adantr 486	. . . . . 6 ⊢ ((𝜑 ∧ 𝑔 ∈ (𝑍𝐻𝑊)) → 𝐶 ∈ Cat)
66	6	adantr 486	. . . . . 6 ⊢ ((𝜑 ∧ 𝑔 ∈ (𝑍𝐻𝑊)) → 𝑆 ∈ 𝐵)
67	8	adantr 486	. . . . . 6 ⊢ ((𝜑 ∧ 𝑔 ∈ (𝑍𝐻𝑊)) → 𝑍 ∈ 𝐵)
68	16	adantr 486	. . . . . 6 ⊢ ((𝜑 ∧ 𝑔 ∈ (𝑍𝐻𝑊)) → 𝑇 ∈ 𝐵)
69	12	adantr 486	. . . . . 6 ⊢ ((𝜑 ∧ 𝑔 ∈ (𝑍𝐻𝑊)) → 𝑃 ∈ (𝑆𝐻𝑍))
70	21	adantr 486	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑔 ∈ (𝑍𝐻𝑊)) → 𝑊 ∈ 𝐵)
71		simpr 490	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑔 ∈ (𝑍𝐻𝑊)) → 𝑔 ∈ (𝑍𝐻𝑊))
72	23	adantr 486	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑔 ∈ (𝑍𝐻𝑊)) → 𝑄 ∈ (𝑊𝐻𝑇))
73	1, 2, 3, 65, 67, 70, 68, 71, 72	catcocl 17874	. . . . . 6 ⊢ ((𝜑 ∧ 𝑔 ∈ (𝑍𝐻𝑊)) → (𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)𝑔) ∈ (𝑍𝐻𝑇))
74	1, 2, 3, 65, 66, 67, 68, 69, 73	catcocl 17874	. . . . 5 ⊢ ((𝜑 ∧ 𝑔 ∈ (𝑍𝐻𝑊)) → ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)𝑔)(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃) ∈ (𝑆𝐻𝑇))
75	74	fmpttd 7126	. . . 4 ⊢ (𝜑 → (𝑔 ∈ (𝑍𝐻𝑊) ↦ ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)𝑔)(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃)):(𝑍𝐻𝑊)⟶(𝑆𝐻𝑇))
76	45, 46, 47, 56, 59, 62, 64, 75	setcco 18273	. . 3 ⊢ (𝜑 → ((𝑔 ∈ (𝑍𝐻𝑊) ↦ ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)𝑔)(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃))(⟨(𝑋𝐻𝑌), (𝑍𝐻𝑊)⟩(comp‘𝐷)(𝑆𝐻𝑇))(𝑓 ∈ (𝑋𝐻𝑌) ↦ ((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾))) = ((𝑔 ∈ (𝑍𝐻𝑊) ↦ ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)𝑔)(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃)) ∘ (𝑓 ∈ (𝑋𝐻𝑌) ↦ ((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾))))
77		eqidd 2764	. . . 4 ⊢ (𝜑 → (𝑓 ∈ (𝑋𝐻𝑌) ↦ ((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾)) = (𝑓 ∈ (𝑋𝐻𝑌) ↦ ((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾)))
78		eqidd 2764	. . . 4 ⊢ (𝜑 → (𝑔 ∈ (𝑍𝐻𝑊) ↦ ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)𝑔)(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃)) = (𝑔 ∈ (𝑍𝐻𝑊) ↦ ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)𝑔)(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃)))
79		oveq2 7438	. . . . 5 ⊢ (𝑔 = ((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾) → (𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)𝑔) = (𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾)))
80	79	oveq1d 7445	. . . 4 ⊢ (𝑔 = ((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾) → ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)𝑔)(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃) = ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾))(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃))
81	63, 77, 78, 80	fmptco 7141	. . 3 ⊢ (𝜑 → ((𝑔 ∈ (𝑍𝐻𝑊) ↦ ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)𝑔)(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃)) ∘ (𝑓 ∈ (𝑋𝐻𝑌) ↦ ((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾))) = (𝑓 ∈ (𝑋𝐻𝑌) ↦ ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾))(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃)))
82	44, 76, 81	3eqtrd 2802	. 2 ⊢ (𝜑 → ((𝑃(⟨𝑍, 𝑊⟩(2nd ‘𝑀)⟨𝑆, 𝑇⟩)𝑄)(⟨(𝑋𝐻𝑌), (𝑍𝐻𝑊)⟩(comp‘𝐷)(𝑆𝐻𝑇))(𝐾(⟨𝑋, 𝑌⟩(2nd ‘𝑀)⟨𝑍, 𝑊⟩)𝐿)) = (𝑓 ∈ (𝑋𝐻𝑌) ↦ ((𝑄(⟨𝑍, 𝑊⟩(comp‘𝐶)𝑇)((𝐿(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑊)𝑓)(⟨𝑍, 𝑋⟩(comp‘𝐶)𝑊)𝐾))(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑇)𝑃)))
83	38, 41, 82	3eqtr4d 2808	1 ⊢ (𝜑 → ((𝐾(⟨𝑆, 𝑍⟩(comp‘𝐶)𝑋)𝑃)(⟨𝑋, 𝑌⟩(2nd ‘𝑀)⟨𝑆, 𝑇⟩)(𝑄(⟨𝑌, 𝑊⟩(comp‘𝐶)𝑇)𝐿)) = ((𝑃(⟨𝑍, 𝑊⟩(2nd ‘𝑀)⟨𝑆, 𝑇⟩)𝑄)(⟨(𝑋𝐻𝑌), (𝑍𝐻𝑊)⟩(comp‘𝐷)(𝑆𝐻𝑇))(𝐾(⟨𝑋, 𝑌⟩(2nd ‘𝑀)⟨𝑍, 𝑊⟩)𝐿)))

This proof depends on syntax axioms:   → wi 4   ∧ wa 401   = wceq 1569   ∈ wcel 2146   ⊆ wss 3900  ⟨cop 4838   ↦ cmpt 5189   × cxp 5653  ran crn 5656   ∘ ccom 5659   Fn wfn 6542  ⟶wf 6543  ‘cfv 6547  (class class class)co 7430  2^nd c2nd 8010  Basecbs 17402  Hom chom 17454  compcco 17455  Catccat 17853  Hom_f chomf 17855  oppCatcoppc 17900  SetCatcsetc 18265  Hom_Fchof 18437

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1944  ax-6 2001  ax-7 2042  ax-8 2148  ax-9 2156  ax-10 2179  ax-11 2196  ax-12 2215  ax-ext 2735  ax-rep 5235  ax-sep 5252  ax-nul 5263  ax-pow 5331  ax-pr 5395  ax-un 7761  ax-cnex 11269  ax-resscn 11270  ax-1cn 11271  ax-icn 11272  ax-addcl 11273  ax-addrcl 11274  ax-mulcl 11275  ax-mulrcl 11276  ax-mulcom 11277  ax-addass 11278  ax-mulass 11279  ax-distr 11280  ax-i2m1 11281  ax-1ne0 11282  ax-1rid 11283  ax-rnegex 11284  ax-rrecex 11285  ax-cnre 11286  ax-pre-lttri 11287  ax-pre-lttrn 11288  ax-pre-ltadd 11289  ax-pre-mulgt0 11290

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2101  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-nel 3066  df-ral 3081  df-rex 3091  df-reu 3370  df-rab 3417  df-v 3456  df-sbc 3743  df-csb 3852  df-ss 3901  df-pss 4017  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-tp 4593  df-op 4839  df-uni 4871  df-iun 4956  df-br 5107  df-opab 5171  df-mpt 5190  df-tr 5216  df-id 5550  df-eprel 5555  df-po 5563  df-so 5564  df-fr 5608  df-we 5610  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-rn 5666  df-res 5667  df-ima 5668  df-pred 6311  df-ord 6372  df-on 6373  df-lim 6374  df-suc 6375  df-iota 6501  df-fun 6549  df-fn 6550  df-f 6551  df-f1 6552  df-fo 6553  df-f1o 6554  df-fv 6555  df-riota 7387  df-ov 7433  df-oprab 7434  df-mpo 7435  df-om 7888  df-1st 8011  df-2nd 8012  df-frecs 8313  df-wrecs 8344  df-recs 8393  df-rdg 8432  df-1o 8490  df-er 8731  df-map 8863  df-en 8988  df-dom 8989  df-sdom 8990  df-fin 8991  df-pnf 11358  df-mnf 11359  df-xr 11360  df-ltxr 11361  df-le 11362  df-sub 11556  df-neg 11557  df-nn 12349  df-2 12418  df-3 12419  df-4 12420  df-5 12421  df-6 12422  df-7 12423  df-8 12424  df-9 12425  df-n0 12620  df-z 12707  df-dec 12828  df-uz 12979  df-fz 13653  df-struct 17340  df-slot 17375  df-ndx 17387  df-base 17403  df-hom 17467  df-cco 17468  df-cat 17857  df-homf 17859  df-setc 18266  df-hof 18439

This theorem is used by:  hofcl  18448