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Theorem fucocolem1 49840
Description: Lemma for fucoco 49844. Associativity for morphisms in category 𝐸. To simply put, ((𝑎 · 𝑏) · (𝑐 · 𝑑)) = (𝑎 · ((𝑏 · 𝑐) · 𝑑)) for morphism compositions. (Contributed by Zhi Wang, 2-Oct-2025.)
Hypotheses
Ref Expression
fucoco.r (𝜑𝑅 ∈ (𝐹(𝐷 Nat 𝐸)𝐾))
fucoco.s (𝜑𝑆 ∈ (𝐺(𝐶 Nat 𝐷)𝐿))
fucoco.u (𝜑𝑈 ∈ (𝐾(𝐷 Nat 𝐸)𝑀))
fucoco.v (𝜑𝑉 ∈ (𝐿(𝐶 Nat 𝐷)𝑁))
fucocolem1.x (𝜑𝑋 ∈ (Base‘𝐶))
fucocolem1.p (𝜑𝑃 ∈ (𝐷 Func 𝐸))
fucocolem1.q (𝜑𝑄 ∈ (𝐶 Func 𝐷))
fucocolem1.a (𝜑𝐴 ∈ (((1st𝑃)‘((1st𝑄)‘𝑋))(Hom ‘𝐸)((1st𝐾)‘((1st𝑁)‘𝑋))))
fucocolem1.b (𝜑𝐵 ∈ (((1st𝐹)‘((1st𝐿)‘𝑋))(Hom ‘𝐸)((1st𝑃)‘((1st𝑄)‘𝑋))))
Assertion
Ref Expression
fucocolem1 (𝜑 → (((𝑈‘((1st𝑁)‘𝑋))(⟨((1st𝑃)‘((1st𝑄)‘𝑋)), ((1st𝐾)‘((1st𝑁)‘𝑋))⟩(comp‘𝐸)((1st𝑀)‘((1st𝑁)‘𝑋)))𝐴)(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝑃)‘((1st𝑄)‘𝑋))⟩(comp‘𝐸)((1st𝑀)‘((1st𝑁)‘𝑋)))(𝐵(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐹)‘((1st𝐿)‘𝑋))⟩(comp‘𝐸)((1st𝑃)‘((1st𝑄)‘𝑋)))((((1st𝐺)‘𝑋)(2nd𝐹)((1st𝐿)‘𝑋))‘(𝑆𝑋)))) = ((𝑈‘((1st𝑁)‘𝑋))(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐾)‘((1st𝑁)‘𝑋))⟩(comp‘𝐸)((1st𝑀)‘((1st𝑁)‘𝑋)))((𝐴(⟨((1st𝐹)‘((1st𝐿)‘𝑋)), ((1st𝑃)‘((1st𝑄)‘𝑋))⟩(comp‘𝐸)((1st𝐾)‘((1st𝑁)‘𝑋)))𝐵)(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐹)‘((1st𝐿)‘𝑋))⟩(comp‘𝐸)((1st𝐾)‘((1st𝑁)‘𝑋)))((((1st𝐺)‘𝑋)(2nd𝐹)((1st𝐿)‘𝑋))‘(𝑆𝑋)))))

Proof of Theorem fucocolem1
StepHypRef Expression
1 eqid 2737 . . 3 (Base‘𝐸) = (Base‘𝐸)
2 eqid 2737 . . 3 (Hom ‘𝐸) = (Hom ‘𝐸)
3 eqid 2737 . . 3 (comp‘𝐸) = (comp‘𝐸)
4 fucoco.r . . . . . . 7 (𝜑𝑅 ∈ (𝐹(𝐷 Nat 𝐸)𝐾))
5 eqid 2737 . . . . . . . 8 (𝐷 Nat 𝐸) = (𝐷 Nat 𝐸)
65natrcl 17911 . . . . . . 7 (𝑅 ∈ (𝐹(𝐷 Nat 𝐸)𝐾) → (𝐹 ∈ (𝐷 Func 𝐸) ∧ 𝐾 ∈ (𝐷 Func 𝐸)))
74, 6syl 17 . . . . . 6 (𝜑 → (𝐹 ∈ (𝐷 Func 𝐸) ∧ 𝐾 ∈ (𝐷 Func 𝐸)))
87simpld 494 . . . . 5 (𝜑𝐹 ∈ (𝐷 Func 𝐸))
98func1st2nd 49563 . . . 4 (𝜑 → (1st𝐹)(𝐷 Func 𝐸)(2nd𝐹))
109funcrcl3 49567 . . 3 (𝜑𝐸 ∈ Cat)
11 eqid 2737 . . . . 5 (Base‘𝐷) = (Base‘𝐷)
1211, 1, 9funcf1 17824 . . . 4 (𝜑 → (1st𝐹):(Base‘𝐷)⟶(Base‘𝐸))
13 eqid 2737 . . . . . 6 (Base‘𝐶) = (Base‘𝐶)
14 fucoco.s . . . . . . . . 9 (𝜑𝑆 ∈ (𝐺(𝐶 Nat 𝐷)𝐿))
15 eqid 2737 . . . . . . . . . 10 (𝐶 Nat 𝐷) = (𝐶 Nat 𝐷)
1615natrcl 17911 . . . . . . . . 9 (𝑆 ∈ (𝐺(𝐶 Nat 𝐷)𝐿) → (𝐺 ∈ (𝐶 Func 𝐷) ∧ 𝐿 ∈ (𝐶 Func 𝐷)))
1714, 16syl 17 . . . . . . . 8 (𝜑 → (𝐺 ∈ (𝐶 Func 𝐷) ∧ 𝐿 ∈ (𝐶 Func 𝐷)))
1817simpld 494 . . . . . . 7 (𝜑𝐺 ∈ (𝐶 Func 𝐷))
1918func1st2nd 49563 . . . . . 6 (𝜑 → (1st𝐺)(𝐶 Func 𝐷)(2nd𝐺))
2013, 11, 19funcf1 17824 . . . . 5 (𝜑 → (1st𝐺):(Base‘𝐶)⟶(Base‘𝐷))
21 fucocolem1.x . . . . 5 (𝜑𝑋 ∈ (Base‘𝐶))
2220, 21ffvelcdmd 7031 . . . 4 (𝜑 → ((1st𝐺)‘𝑋) ∈ (Base‘𝐷))
2312, 22ffvelcdmd 7031 . . 3 (𝜑 → ((1st𝐹)‘((1st𝐺)‘𝑋)) ∈ (Base‘𝐸))
24 fucocolem1.p . . . . . 6 (𝜑𝑃 ∈ (𝐷 Func 𝐸))
2524func1st2nd 49563 . . . . 5 (𝜑 → (1st𝑃)(𝐷 Func 𝐸)(2nd𝑃))
2611, 1, 25funcf1 17824 . . . 4 (𝜑 → (1st𝑃):(Base‘𝐷)⟶(Base‘𝐸))
27 fucocolem1.q . . . . . . 7 (𝜑𝑄 ∈ (𝐶 Func 𝐷))
2827func1st2nd 49563 . . . . . 6 (𝜑 → (1st𝑄)(𝐶 Func 𝐷)(2nd𝑄))
2913, 11, 28funcf1 17824 . . . . 5 (𝜑 → (1st𝑄):(Base‘𝐶)⟶(Base‘𝐷))
3029, 21ffvelcdmd 7031 . . . 4 (𝜑 → ((1st𝑄)‘𝑋) ∈ (Base‘𝐷))
3126, 30ffvelcdmd 7031 . . 3 (𝜑 → ((1st𝑃)‘((1st𝑄)‘𝑋)) ∈ (Base‘𝐸))
327simprd 495 . . . . . 6 (𝜑𝐾 ∈ (𝐷 Func 𝐸))
3332func1st2nd 49563 . . . . 5 (𝜑 → (1st𝐾)(𝐷 Func 𝐸)(2nd𝐾))
3411, 1, 33funcf1 17824 . . . 4 (𝜑 → (1st𝐾):(Base‘𝐷)⟶(Base‘𝐸))
35 fucoco.v . . . . . . . . 9 (𝜑𝑉 ∈ (𝐿(𝐶 Nat 𝐷)𝑁))
3615natrcl 17911 . . . . . . . . 9 (𝑉 ∈ (𝐿(𝐶 Nat 𝐷)𝑁) → (𝐿 ∈ (𝐶 Func 𝐷) ∧ 𝑁 ∈ (𝐶 Func 𝐷)))
3735, 36syl 17 . . . . . . . 8 (𝜑 → (𝐿 ∈ (𝐶 Func 𝐷) ∧ 𝑁 ∈ (𝐶 Func 𝐷)))
3837simprd 495 . . . . . . 7 (𝜑𝑁 ∈ (𝐶 Func 𝐷))
3938func1st2nd 49563 . . . . . 6 (𝜑 → (1st𝑁)(𝐶 Func 𝐷)(2nd𝑁))
4013, 11, 39funcf1 17824 . . . . 5 (𝜑 → (1st𝑁):(Base‘𝐶)⟶(Base‘𝐷))
4140, 21ffvelcdmd 7031 . . . 4 (𝜑 → ((1st𝑁)‘𝑋) ∈ (Base‘𝐷))
4234, 41ffvelcdmd 7031 . . 3 (𝜑 → ((1st𝐾)‘((1st𝑁)‘𝑋)) ∈ (Base‘𝐸))
4317simprd 495 . . . . . . . 8 (𝜑𝐿 ∈ (𝐶 Func 𝐷))
4443func1st2nd 49563 . . . . . . 7 (𝜑 → (1st𝐿)(𝐶 Func 𝐷)(2nd𝐿))
4513, 11, 44funcf1 17824 . . . . . 6 (𝜑 → (1st𝐿):(Base‘𝐶)⟶(Base‘𝐷))
4645, 21ffvelcdmd 7031 . . . . 5 (𝜑 → ((1st𝐿)‘𝑋) ∈ (Base‘𝐷))
4712, 46ffvelcdmd 7031 . . . 4 (𝜑 → ((1st𝐹)‘((1st𝐿)‘𝑋)) ∈ (Base‘𝐸))
48 eqid 2737 . . . . . 6 (Hom ‘𝐷) = (Hom ‘𝐷)
4911, 48, 2, 9, 22, 46funcf2 17826 . . . . 5 (𝜑 → (((1st𝐺)‘𝑋)(2nd𝐹)((1st𝐿)‘𝑋)):(((1st𝐺)‘𝑋)(Hom ‘𝐷)((1st𝐿)‘𝑋))⟶(((1st𝐹)‘((1st𝐺)‘𝑋))(Hom ‘𝐸)((1st𝐹)‘((1st𝐿)‘𝑋))))
5015, 14nat1st2nd 17912 . . . . . 6 (𝜑𝑆 ∈ (⟨(1st𝐺), (2nd𝐺)⟩(𝐶 Nat 𝐷)⟨(1st𝐿), (2nd𝐿)⟩))
5115, 50, 13, 48, 21natcl 17914 . . . . 5 (𝜑 → (𝑆𝑋) ∈ (((1st𝐺)‘𝑋)(Hom ‘𝐷)((1st𝐿)‘𝑋)))
5249, 51ffvelcdmd 7031 . . . 4 (𝜑 → ((((1st𝐺)‘𝑋)(2nd𝐹)((1st𝐿)‘𝑋))‘(𝑆𝑋)) ∈ (((1st𝐹)‘((1st𝐺)‘𝑋))(Hom ‘𝐸)((1st𝐹)‘((1st𝐿)‘𝑋))))
53 fucocolem1.b . . . 4 (𝜑𝐵 ∈ (((1st𝐹)‘((1st𝐿)‘𝑋))(Hom ‘𝐸)((1st𝑃)‘((1st𝑄)‘𝑋))))
541, 2, 3, 10, 23, 47, 31, 52, 53catcocl 17642 . . 3 (𝜑 → (𝐵(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐹)‘((1st𝐿)‘𝑋))⟩(comp‘𝐸)((1st𝑃)‘((1st𝑄)‘𝑋)))((((1st𝐺)‘𝑋)(2nd𝐹)((1st𝐿)‘𝑋))‘(𝑆𝑋))) ∈ (((1st𝐹)‘((1st𝐺)‘𝑋))(Hom ‘𝐸)((1st𝑃)‘((1st𝑄)‘𝑋))))
55 fucocolem1.a . . 3 (𝜑𝐴 ∈ (((1st𝑃)‘((1st𝑄)‘𝑋))(Hom ‘𝐸)((1st𝐾)‘((1st𝑁)‘𝑋))))
56 fucoco.u . . . . . . . 8 (𝜑𝑈 ∈ (𝐾(𝐷 Nat 𝐸)𝑀))
575natrcl 17911 . . . . . . . 8 (𝑈 ∈ (𝐾(𝐷 Nat 𝐸)𝑀) → (𝐾 ∈ (𝐷 Func 𝐸) ∧ 𝑀 ∈ (𝐷 Func 𝐸)))
5856, 57syl 17 . . . . . . 7 (𝜑 → (𝐾 ∈ (𝐷 Func 𝐸) ∧ 𝑀 ∈ (𝐷 Func 𝐸)))
5958simprd 495 . . . . . 6 (𝜑𝑀 ∈ (𝐷 Func 𝐸))
6059func1st2nd 49563 . . . . 5 (𝜑 → (1st𝑀)(𝐷 Func 𝐸)(2nd𝑀))
6111, 1, 60funcf1 17824 . . . 4 (𝜑 → (1st𝑀):(Base‘𝐷)⟶(Base‘𝐸))
6261, 41ffvelcdmd 7031 . . 3 (𝜑 → ((1st𝑀)‘((1st𝑁)‘𝑋)) ∈ (Base‘𝐸))
635, 56nat1st2nd 17912 . . . 4 (𝜑𝑈 ∈ (⟨(1st𝐾), (2nd𝐾)⟩(𝐷 Nat 𝐸)⟨(1st𝑀), (2nd𝑀)⟩))
645, 63, 11, 2, 41natcl 17914 . . 3 (𝜑 → (𝑈‘((1st𝑁)‘𝑋)) ∈ (((1st𝐾)‘((1st𝑁)‘𝑋))(Hom ‘𝐸)((1st𝑀)‘((1st𝑁)‘𝑋))))
651, 2, 3, 10, 23, 31, 42, 54, 55, 62, 64catass 17643 . 2 (𝜑 → (((𝑈‘((1st𝑁)‘𝑋))(⟨((1st𝑃)‘((1st𝑄)‘𝑋)), ((1st𝐾)‘((1st𝑁)‘𝑋))⟩(comp‘𝐸)((1st𝑀)‘((1st𝑁)‘𝑋)))𝐴)(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝑃)‘((1st𝑄)‘𝑋))⟩(comp‘𝐸)((1st𝑀)‘((1st𝑁)‘𝑋)))(𝐵(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐹)‘((1st𝐿)‘𝑋))⟩(comp‘𝐸)((1st𝑃)‘((1st𝑄)‘𝑋)))((((1st𝐺)‘𝑋)(2nd𝐹)((1st𝐿)‘𝑋))‘(𝑆𝑋)))) = ((𝑈‘((1st𝑁)‘𝑋))(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐾)‘((1st𝑁)‘𝑋))⟩(comp‘𝐸)((1st𝑀)‘((1st𝑁)‘𝑋)))(𝐴(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝑃)‘((1st𝑄)‘𝑋))⟩(comp‘𝐸)((1st𝐾)‘((1st𝑁)‘𝑋)))(𝐵(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐹)‘((1st𝐿)‘𝑋))⟩(comp‘𝐸)((1st𝑃)‘((1st𝑄)‘𝑋)))((((1st𝐺)‘𝑋)(2nd𝐹)((1st𝐿)‘𝑋))‘(𝑆𝑋))))))
661, 2, 3, 10, 23, 47, 31, 52, 53, 42, 55catass 17643 . . 3 (𝜑 → ((𝐴(⟨((1st𝐹)‘((1st𝐿)‘𝑋)), ((1st𝑃)‘((1st𝑄)‘𝑋))⟩(comp‘𝐸)((1st𝐾)‘((1st𝑁)‘𝑋)))𝐵)(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐹)‘((1st𝐿)‘𝑋))⟩(comp‘𝐸)((1st𝐾)‘((1st𝑁)‘𝑋)))((((1st𝐺)‘𝑋)(2nd𝐹)((1st𝐿)‘𝑋))‘(𝑆𝑋))) = (𝐴(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝑃)‘((1st𝑄)‘𝑋))⟩(comp‘𝐸)((1st𝐾)‘((1st𝑁)‘𝑋)))(𝐵(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐹)‘((1st𝐿)‘𝑋))⟩(comp‘𝐸)((1st𝑃)‘((1st𝑄)‘𝑋)))((((1st𝐺)‘𝑋)(2nd𝐹)((1st𝐿)‘𝑋))‘(𝑆𝑋)))))
6766oveq2d 7376 . 2 (𝜑 → ((𝑈‘((1st𝑁)‘𝑋))(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐾)‘((1st𝑁)‘𝑋))⟩(comp‘𝐸)((1st𝑀)‘((1st𝑁)‘𝑋)))((𝐴(⟨((1st𝐹)‘((1st𝐿)‘𝑋)), ((1st𝑃)‘((1st𝑄)‘𝑋))⟩(comp‘𝐸)((1st𝐾)‘((1st𝑁)‘𝑋)))𝐵)(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐹)‘((1st𝐿)‘𝑋))⟩(comp‘𝐸)((1st𝐾)‘((1st𝑁)‘𝑋)))((((1st𝐺)‘𝑋)(2nd𝐹)((1st𝐿)‘𝑋))‘(𝑆𝑋)))) = ((𝑈‘((1st𝑁)‘𝑋))(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐾)‘((1st𝑁)‘𝑋))⟩(comp‘𝐸)((1st𝑀)‘((1st𝑁)‘𝑋)))(𝐴(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝑃)‘((1st𝑄)‘𝑋))⟩(comp‘𝐸)((1st𝐾)‘((1st𝑁)‘𝑋)))(𝐵(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐹)‘((1st𝐿)‘𝑋))⟩(comp‘𝐸)((1st𝑃)‘((1st𝑄)‘𝑋)))((((1st𝐺)‘𝑋)(2nd𝐹)((1st𝐿)‘𝑋))‘(𝑆𝑋))))))
6865, 67eqtr4d 2775 1 (𝜑 → (((𝑈‘((1st𝑁)‘𝑋))(⟨((1st𝑃)‘((1st𝑄)‘𝑋)), ((1st𝐾)‘((1st𝑁)‘𝑋))⟩(comp‘𝐸)((1st𝑀)‘((1st𝑁)‘𝑋)))𝐴)(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝑃)‘((1st𝑄)‘𝑋))⟩(comp‘𝐸)((1st𝑀)‘((1st𝑁)‘𝑋)))(𝐵(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐹)‘((1st𝐿)‘𝑋))⟩(comp‘𝐸)((1st𝑃)‘((1st𝑄)‘𝑋)))((((1st𝐺)‘𝑋)(2nd𝐹)((1st𝐿)‘𝑋))‘(𝑆𝑋)))) = ((𝑈‘((1st𝑁)‘𝑋))(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐾)‘((1st𝑁)‘𝑋))⟩(comp‘𝐸)((1st𝑀)‘((1st𝑁)‘𝑋)))((𝐴(⟨((1st𝐹)‘((1st𝐿)‘𝑋)), ((1st𝑃)‘((1st𝑄)‘𝑋))⟩(comp‘𝐸)((1st𝐾)‘((1st𝑁)‘𝑋)))𝐵)(⟨((1st𝐹)‘((1st𝐺)‘𝑋)), ((1st𝐹)‘((1st𝐿)‘𝑋))⟩(comp‘𝐸)((1st𝐾)‘((1st𝑁)‘𝑋)))((((1st𝐺)‘𝑋)(2nd𝐹)((1st𝐿)‘𝑋))‘(𝑆𝑋)))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395   = wceq 1542  wcel 2114  cop 4574  cfv 6492  (class class class)co 7360  1st c1st 7933  2nd c2nd 7934  Basecbs 17170  Hom chom 17222  compcco 17223   Func cfunc 17812   Nat cnat 17902
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-rep 5212  ax-sep 5231  ax-nul 5241  ax-pow 5302  ax-pr 5370  ax-un 7682
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-reu 3344  df-rab 3391  df-v 3432  df-sbc 3730  df-csb 3839  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4275  df-if 4468  df-pw 4544  df-sn 4569  df-pr 4571  df-op 4575  df-uni 4852  df-iun 4936  df-br 5087  df-opab 5149  df-mpt 5168  df-id 5519  df-xp 5630  df-rel 5631  df-cnv 5632  df-co 5633  df-dm 5634  df-rn 5635  df-res 5636  df-ima 5637  df-iota 6448  df-fun 6494  df-fn 6495  df-f 6496  df-f1 6497  df-fo 6498  df-f1o 6499  df-fv 6500  df-ov 7363  df-oprab 7364  df-mpo 7365  df-1st 7935  df-2nd 7936  df-map 8768  df-ixp 8839  df-cat 17625  df-func 17816  df-nat 17904
This theorem is referenced by:  fucocolem3  49842  fucoco  49844
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