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Theorem 2ndfcl 17118
Description: The second projection functor is a functor onto the right argument. (Contributed by Mario Carneiro, 11-Jan-2017.)
Hypotheses
Ref Expression
1stfcl.t 𝑇 = (𝐶 ×c 𝐷)
1stfcl.c (𝜑𝐶 ∈ Cat)
1stfcl.d (𝜑𝐷 ∈ Cat)
2ndfcl.p 𝑄 = (𝐶 2ndF 𝐷)
Assertion
Ref Expression
2ndfcl (𝜑𝑄 ∈ (𝑇 Func 𝐷))

Proof of Theorem 2ndfcl
Dummy variables 𝑓 𝑔 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 1stfcl.t . . . 4 𝑇 = (𝐶 ×c 𝐷)
2 eqid 2765 . . . . 5 (Base‘𝐶) = (Base‘𝐶)
3 eqid 2765 . . . . 5 (Base‘𝐷) = (Base‘𝐷)
41, 2, 3xpcbas 17098 . . . 4 ((Base‘𝐶) × (Base‘𝐷)) = (Base‘𝑇)
5 eqid 2765 . . . 4 (Hom ‘𝑇) = (Hom ‘𝑇)
6 1stfcl.c . . . 4 (𝜑𝐶 ∈ Cat)
7 1stfcl.d . . . 4 (𝜑𝐷 ∈ Cat)
8 2ndfcl.p . . . 4 𝑄 = (𝐶 2ndF 𝐷)
91, 4, 5, 6, 7, 82ndfval 17114 . . 3 (𝜑𝑄 = ⟨(2nd ↾ ((Base‘𝐶) × (Base‘𝐷))), (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)), 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ↦ (2nd ↾ (𝑥(Hom ‘𝑇)𝑦)))⟩)
10 fo2nd 7391 . . . . . . . 8 2nd :V–onto→V
11 fofun 6301 . . . . . . . 8 (2nd :V–onto→V → Fun 2nd )
1210, 11ax-mp 5 . . . . . . 7 Fun 2nd
13 fvex 6392 . . . . . . . 8 (Base‘𝐶) ∈ V
14 fvex 6392 . . . . . . . 8 (Base‘𝐷) ∈ V
1513, 14xpex 7164 . . . . . . 7 ((Base‘𝐶) × (Base‘𝐷)) ∈ V
16 resfunexg 6676 . . . . . . 7 ((Fun 2nd ∧ ((Base‘𝐶) × (Base‘𝐷)) ∈ V) → (2nd ↾ ((Base‘𝐶) × (Base‘𝐷))) ∈ V)
1712, 15, 16mp2an 683 . . . . . 6 (2nd ↾ ((Base‘𝐶) × (Base‘𝐷))) ∈ V
1815, 15mpt2ex 7452 . . . . . 6 (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)), 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ↦ (2nd ↾ (𝑥(Hom ‘𝑇)𝑦))) ∈ V
1917, 18op2ndd 7381 . . . . 5 (𝑄 = ⟨(2nd ↾ ((Base‘𝐶) × (Base‘𝐷))), (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)), 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ↦ (2nd ↾ (𝑥(Hom ‘𝑇)𝑦)))⟩ → (2nd𝑄) = (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)), 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ↦ (2nd ↾ (𝑥(Hom ‘𝑇)𝑦))))
209, 19syl 17 . . . 4 (𝜑 → (2nd𝑄) = (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)), 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ↦ (2nd ↾ (𝑥(Hom ‘𝑇)𝑦))))
2120opeq2d 4568 . . 3 (𝜑 → ⟨(2nd ↾ ((Base‘𝐶) × (Base‘𝐷))), (2nd𝑄)⟩ = ⟨(2nd ↾ ((Base‘𝐶) × (Base‘𝐷))), (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)), 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ↦ (2nd ↾ (𝑥(Hom ‘𝑇)𝑦)))⟩)
229, 21eqtr4d 2802 . 2 (𝜑𝑄 = ⟨(2nd ↾ ((Base‘𝐶) × (Base‘𝐷))), (2nd𝑄)⟩)
23 eqid 2765 . . . 4 (Hom ‘𝐷) = (Hom ‘𝐷)
24 eqid 2765 . . . 4 (Id‘𝑇) = (Id‘𝑇)
25 eqid 2765 . . . 4 (Id‘𝐷) = (Id‘𝐷)
26 eqid 2765 . . . 4 (comp‘𝑇) = (comp‘𝑇)
27 eqid 2765 . . . 4 (comp‘𝐷) = (comp‘𝐷)
281, 6, 7xpccat 17110 . . . 4 (𝜑𝑇 ∈ Cat)
29 f2ndres 7395 . . . . 5 (2nd ↾ ((Base‘𝐶) × (Base‘𝐷))):((Base‘𝐶) × (Base‘𝐷))⟶(Base‘𝐷)
3029a1i 11 . . . 4 (𝜑 → (2nd ↾ ((Base‘𝐶) × (Base‘𝐷))):((Base‘𝐶) × (Base‘𝐷))⟶(Base‘𝐷))
31 eqid 2765 . . . . . 6 (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)), 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ↦ (2nd ↾ (𝑥(Hom ‘𝑇)𝑦))) = (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)), 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ↦ (2nd ↾ (𝑥(Hom ‘𝑇)𝑦)))
32 ovex 6878 . . . . . . 7 (𝑥(Hom ‘𝑇)𝑦) ∈ V
33 resfunexg 6676 . . . . . . 7 ((Fun 2nd ∧ (𝑥(Hom ‘𝑇)𝑦) ∈ V) → (2nd ↾ (𝑥(Hom ‘𝑇)𝑦)) ∈ V)
3412, 32, 33mp2an 683 . . . . . 6 (2nd ↾ (𝑥(Hom ‘𝑇)𝑦)) ∈ V
3531, 34fnmpt2i 7444 . . . . 5 (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)), 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ↦ (2nd ↾ (𝑥(Hom ‘𝑇)𝑦))) Fn (((Base‘𝐶) × (Base‘𝐷)) × ((Base‘𝐶) × (Base‘𝐷)))
3620fneq1d 6161 . . . . 5 (𝜑 → ((2nd𝑄) Fn (((Base‘𝐶) × (Base‘𝐷)) × ((Base‘𝐶) × (Base‘𝐷))) ↔ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)), 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ↦ (2nd ↾ (𝑥(Hom ‘𝑇)𝑦))) Fn (((Base‘𝐶) × (Base‘𝐷)) × ((Base‘𝐶) × (Base‘𝐷)))))
3735, 36mpbiri 249 . . . 4 (𝜑 → (2nd𝑄) Fn (((Base‘𝐶) × (Base‘𝐷)) × ((Base‘𝐶) × (Base‘𝐷))))
38 f2ndres 7395 . . . . . 6 (2nd ↾ (((1st𝑥)(Hom ‘𝐶)(1st𝑦)) × ((2nd𝑥)(Hom ‘𝐷)(2nd𝑦)))):(((1st𝑥)(Hom ‘𝐶)(1st𝑦)) × ((2nd𝑥)(Hom ‘𝐷)(2nd𝑦)))⟶((2nd𝑥)(Hom ‘𝐷)(2nd𝑦))
396adantr 472 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → 𝐶 ∈ Cat)
407adantr 472 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → 𝐷 ∈ Cat)
41 simprl 787 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → 𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)))
42 simprr 789 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))
431, 4, 5, 39, 40, 8, 41, 422ndf2 17116 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → (𝑥(2nd𝑄)𝑦) = (2nd ↾ (𝑥(Hom ‘𝑇)𝑦)))
44 eqid 2765 . . . . . . . . . 10 (Hom ‘𝐶) = (Hom ‘𝐶)
451, 4, 44, 23, 5, 41, 42xpchom 17100 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → (𝑥(Hom ‘𝑇)𝑦) = (((1st𝑥)(Hom ‘𝐶)(1st𝑦)) × ((2nd𝑥)(Hom ‘𝐷)(2nd𝑦))))
4645reseq2d 5567 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → (2nd ↾ (𝑥(Hom ‘𝑇)𝑦)) = (2nd ↾ (((1st𝑥)(Hom ‘𝐶)(1st𝑦)) × ((2nd𝑥)(Hom ‘𝐷)(2nd𝑦)))))
4743, 46eqtrd 2799 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → (𝑥(2nd𝑄)𝑦) = (2nd ↾ (((1st𝑥)(Hom ‘𝐶)(1st𝑦)) × ((2nd𝑥)(Hom ‘𝐷)(2nd𝑦)))))
4847feq1d 6210 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → ((𝑥(2nd𝑄)𝑦):(((1st𝑥)(Hom ‘𝐶)(1st𝑦)) × ((2nd𝑥)(Hom ‘𝐷)(2nd𝑦)))⟶((2nd𝑥)(Hom ‘𝐷)(2nd𝑦)) ↔ (2nd ↾ (((1st𝑥)(Hom ‘𝐶)(1st𝑦)) × ((2nd𝑥)(Hom ‘𝐷)(2nd𝑦)))):(((1st𝑥)(Hom ‘𝐶)(1st𝑦)) × ((2nd𝑥)(Hom ‘𝐷)(2nd𝑦)))⟶((2nd𝑥)(Hom ‘𝐷)(2nd𝑦))))
4938, 48mpbiri 249 . . . . 5 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → (𝑥(2nd𝑄)𝑦):(((1st𝑥)(Hom ‘𝐶)(1st𝑦)) × ((2nd𝑥)(Hom ‘𝐷)(2nd𝑦)))⟶((2nd𝑥)(Hom ‘𝐷)(2nd𝑦)))
50 fvres 6398 . . . . . . . 8 (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) → ((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑥) = (2nd𝑥))
5150ad2antrl 719 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → ((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑥) = (2nd𝑥))
52 fvres 6398 . . . . . . . 8 (𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) → ((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑦) = (2nd𝑦))
5352ad2antll 720 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → ((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑦) = (2nd𝑦))
5451, 53oveq12d 6864 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → (((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑥)(Hom ‘𝐷)((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑦)) = ((2nd𝑥)(Hom ‘𝐷)(2nd𝑦)))
5545, 54feq23d 6220 . . . . 5 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → ((𝑥(2nd𝑄)𝑦):(𝑥(Hom ‘𝑇)𝑦)⟶(((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑥)(Hom ‘𝐷)((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑦)) ↔ (𝑥(2nd𝑄)𝑦):(((1st𝑥)(Hom ‘𝐶)(1st𝑦)) × ((2nd𝑥)(Hom ‘𝐷)(2nd𝑦)))⟶((2nd𝑥)(Hom ‘𝐷)(2nd𝑦))))
5649, 55mpbird 248 . . . 4 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))) → (𝑥(2nd𝑄)𝑦):(𝑥(Hom ‘𝑇)𝑦)⟶(((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑥)(Hom ‘𝐷)((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑦)))
5728adantr 472 . . . . . . . 8 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → 𝑇 ∈ Cat)
58 simpr 477 . . . . . . . 8 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → 𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)))
594, 5, 24, 57, 58catidcl 16622 . . . . . . 7 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → ((Id‘𝑇)‘𝑥) ∈ (𝑥(Hom ‘𝑇)𝑥))
60 fvres 6398 . . . . . . 7 (((Id‘𝑇)‘𝑥) ∈ (𝑥(Hom ‘𝑇)𝑥) → ((2nd ↾ (𝑥(Hom ‘𝑇)𝑥))‘((Id‘𝑇)‘𝑥)) = (2nd ‘((Id‘𝑇)‘𝑥)))
6159, 60syl 17 . . . . . 6 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → ((2nd ↾ (𝑥(Hom ‘𝑇)𝑥))‘((Id‘𝑇)‘𝑥)) = (2nd ‘((Id‘𝑇)‘𝑥)))
62 1st2nd2 7409 . . . . . . . . . 10 (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) → 𝑥 = ⟨(1st𝑥), (2nd𝑥)⟩)
6362adantl 473 . . . . . . . . 9 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → 𝑥 = ⟨(1st𝑥), (2nd𝑥)⟩)
6463fveq2d 6383 . . . . . . . 8 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → ((Id‘𝑇)‘𝑥) = ((Id‘𝑇)‘⟨(1st𝑥), (2nd𝑥)⟩))
656adantr 472 . . . . . . . . 9 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → 𝐶 ∈ Cat)
667adantr 472 . . . . . . . . 9 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → 𝐷 ∈ Cat)
67 eqid 2765 . . . . . . . . 9 (Id‘𝐶) = (Id‘𝐶)
68 xp1st 7402 . . . . . . . . . 10 (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) → (1st𝑥) ∈ (Base‘𝐶))
6968adantl 473 . . . . . . . . 9 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → (1st𝑥) ∈ (Base‘𝐶))
70 xp2nd 7403 . . . . . . . . . 10 (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) → (2nd𝑥) ∈ (Base‘𝐷))
7170adantl 473 . . . . . . . . 9 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → (2nd𝑥) ∈ (Base‘𝐷))
721, 65, 66, 2, 3, 67, 25, 24, 69, 71xpcid 17109 . . . . . . . 8 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → ((Id‘𝑇)‘⟨(1st𝑥), (2nd𝑥)⟩) = ⟨((Id‘𝐶)‘(1st𝑥)), ((Id‘𝐷)‘(2nd𝑥))⟩)
7364, 72eqtrd 2799 . . . . . . 7 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → ((Id‘𝑇)‘𝑥) = ⟨((Id‘𝐶)‘(1st𝑥)), ((Id‘𝐷)‘(2nd𝑥))⟩)
74 fvex 6392 . . . . . . . 8 ((Id‘𝐶)‘(1st𝑥)) ∈ V
75 fvex 6392 . . . . . . . 8 ((Id‘𝐷)‘(2nd𝑥)) ∈ V
7674, 75op2ndd 7381 . . . . . . 7 (((Id‘𝑇)‘𝑥) = ⟨((Id‘𝐶)‘(1st𝑥)), ((Id‘𝐷)‘(2nd𝑥))⟩ → (2nd ‘((Id‘𝑇)‘𝑥)) = ((Id‘𝐷)‘(2nd𝑥)))
7773, 76syl 17 . . . . . 6 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → (2nd ‘((Id‘𝑇)‘𝑥)) = ((Id‘𝐷)‘(2nd𝑥)))
7861, 77eqtrd 2799 . . . . 5 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → ((2nd ↾ (𝑥(Hom ‘𝑇)𝑥))‘((Id‘𝑇)‘𝑥)) = ((Id‘𝐷)‘(2nd𝑥)))
791, 4, 5, 65, 66, 8, 58, 582ndf2 17116 . . . . . 6 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → (𝑥(2nd𝑄)𝑥) = (2nd ↾ (𝑥(Hom ‘𝑇)𝑥)))
8079fveq1d 6381 . . . . 5 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → ((𝑥(2nd𝑄)𝑥)‘((Id‘𝑇)‘𝑥)) = ((2nd ↾ (𝑥(Hom ‘𝑇)𝑥))‘((Id‘𝑇)‘𝑥)))
8150adantl 473 . . . . . 6 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → ((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑥) = (2nd𝑥))
8281fveq2d 6383 . . . . 5 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → ((Id‘𝐷)‘((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑥)) = ((Id‘𝐷)‘(2nd𝑥)))
8378, 80, 823eqtr4d 2809 . . . 4 ((𝜑𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷))) → ((𝑥(2nd𝑄)𝑥)‘((Id‘𝑇)‘𝑥)) = ((Id‘𝐷)‘((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑥)))
84283ad2ant1 1163 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → 𝑇 ∈ Cat)
85 simp21 1263 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → 𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)))
86 simp22 1264 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)))
87 simp23 1265 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷)))
88 simp3l 1258 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → 𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦))
89 simp3r 1259 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))
904, 5, 26, 84, 85, 86, 87, 88, 89catcocl 16625 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → (𝑔(⟨𝑥, 𝑦⟩(comp‘𝑇)𝑧)𝑓) ∈ (𝑥(Hom ‘𝑇)𝑧))
91 fvres 6398 . . . . . . 7 ((𝑔(⟨𝑥, 𝑦⟩(comp‘𝑇)𝑧)𝑓) ∈ (𝑥(Hom ‘𝑇)𝑧) → ((2nd ↾ (𝑥(Hom ‘𝑇)𝑧))‘(𝑔(⟨𝑥, 𝑦⟩(comp‘𝑇)𝑧)𝑓)) = (2nd ‘(𝑔(⟨𝑥, 𝑦⟩(comp‘𝑇)𝑧)𝑓)))
9290, 91syl 17 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → ((2nd ↾ (𝑥(Hom ‘𝑇)𝑧))‘(𝑔(⟨𝑥, 𝑦⟩(comp‘𝑇)𝑧)𝑓)) = (2nd ‘(𝑔(⟨𝑥, 𝑦⟩(comp‘𝑇)𝑧)𝑓)))
931, 4, 5, 26, 85, 86, 87, 88, 89, 27xpcco2nd 17105 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → (2nd ‘(𝑔(⟨𝑥, 𝑦⟩(comp‘𝑇)𝑧)𝑓)) = ((2nd𝑔)(⟨(2nd𝑥), (2nd𝑦)⟩(comp‘𝐷)(2nd𝑧))(2nd𝑓)))
9492, 93eqtrd 2799 . . . . 5 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → ((2nd ↾ (𝑥(Hom ‘𝑇)𝑧))‘(𝑔(⟨𝑥, 𝑦⟩(comp‘𝑇)𝑧)𝑓)) = ((2nd𝑔)(⟨(2nd𝑥), (2nd𝑦)⟩(comp‘𝐷)(2nd𝑧))(2nd𝑓)))
9563ad2ant1 1163 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → 𝐶 ∈ Cat)
9673ad2ant1 1163 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → 𝐷 ∈ Cat)
971, 4, 5, 95, 96, 8, 85, 872ndf2 17116 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → (𝑥(2nd𝑄)𝑧) = (2nd ↾ (𝑥(Hom ‘𝑇)𝑧)))
9897fveq1d 6381 . . . . 5 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → ((𝑥(2nd𝑄)𝑧)‘(𝑔(⟨𝑥, 𝑦⟩(comp‘𝑇)𝑧)𝑓)) = ((2nd ↾ (𝑥(Hom ‘𝑇)𝑧))‘(𝑔(⟨𝑥, 𝑦⟩(comp‘𝑇)𝑧)𝑓)))
9985, 50syl 17 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → ((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑥) = (2nd𝑥))
10086, 52syl 17 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → ((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑦) = (2nd𝑦))
10199, 100opeq12d 4569 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → ⟨((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑥), ((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑦)⟩ = ⟨(2nd𝑥), (2nd𝑦)⟩)
102 fvres 6398 . . . . . . . 8 (𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷)) → ((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑧) = (2nd𝑧))
10387, 102syl 17 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → ((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑧) = (2nd𝑧))
104101, 103oveq12d 6864 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → (⟨((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑥), ((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑦)⟩(comp‘𝐷)((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑧)) = (⟨(2nd𝑥), (2nd𝑦)⟩(comp‘𝐷)(2nd𝑧)))
1051, 4, 5, 95, 96, 8, 86, 872ndf2 17116 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → (𝑦(2nd𝑄)𝑧) = (2nd ↾ (𝑦(Hom ‘𝑇)𝑧)))
106105fveq1d 6381 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → ((𝑦(2nd𝑄)𝑧)‘𝑔) = ((2nd ↾ (𝑦(Hom ‘𝑇)𝑧))‘𝑔))
107 fvres 6398 . . . . . . . 8 (𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧) → ((2nd ↾ (𝑦(Hom ‘𝑇)𝑧))‘𝑔) = (2nd𝑔))
10889, 107syl 17 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → ((2nd ↾ (𝑦(Hom ‘𝑇)𝑧))‘𝑔) = (2nd𝑔))
109106, 108eqtrd 2799 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → ((𝑦(2nd𝑄)𝑧)‘𝑔) = (2nd𝑔))
1101, 4, 5, 95, 96, 8, 85, 862ndf2 17116 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → (𝑥(2nd𝑄)𝑦) = (2nd ↾ (𝑥(Hom ‘𝑇)𝑦)))
111110fveq1d 6381 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → ((𝑥(2nd𝑄)𝑦)‘𝑓) = ((2nd ↾ (𝑥(Hom ‘𝑇)𝑦))‘𝑓))
112 fvres 6398 . . . . . . . 8 (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) → ((2nd ↾ (𝑥(Hom ‘𝑇)𝑦))‘𝑓) = (2nd𝑓))
11388, 112syl 17 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → ((2nd ↾ (𝑥(Hom ‘𝑇)𝑦))‘𝑓) = (2nd𝑓))
114111, 113eqtrd 2799 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → ((𝑥(2nd𝑄)𝑦)‘𝑓) = (2nd𝑓))
115104, 109, 114oveq123d 6867 . . . . 5 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → (((𝑦(2nd𝑄)𝑧)‘𝑔)(⟨((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑥), ((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑦)⟩(comp‘𝐷)((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑧))((𝑥(2nd𝑄)𝑦)‘𝑓)) = ((2nd𝑔)(⟨(2nd𝑥), (2nd𝑦)⟩(comp‘𝐷)(2nd𝑧))(2nd𝑓)))
11694, 98, 1153eqtr4d 2809 . . . 4 ((𝜑 ∧ (𝑥 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑦 ∈ ((Base‘𝐶) × (Base‘𝐷)) ∧ 𝑧 ∈ ((Base‘𝐶) × (Base‘𝐷))) ∧ (𝑓 ∈ (𝑥(Hom ‘𝑇)𝑦) ∧ 𝑔 ∈ (𝑦(Hom ‘𝑇)𝑧))) → ((𝑥(2nd𝑄)𝑧)‘(𝑔(⟨𝑥, 𝑦⟩(comp‘𝑇)𝑧)𝑓)) = (((𝑦(2nd𝑄)𝑧)‘𝑔)(⟨((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑥), ((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑦)⟩(comp‘𝐷)((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))‘𝑧))((𝑥(2nd𝑄)𝑦)‘𝑓)))
1174, 3, 5, 23, 24, 25, 26, 27, 28, 7, 30, 37, 56, 83, 116isfuncd 16804 . . 3 (𝜑 → (2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))(𝑇 Func 𝐷)(2nd𝑄))
118 df-br 4812 . . 3 ((2nd ↾ ((Base‘𝐶) × (Base‘𝐷)))(𝑇 Func 𝐷)(2nd𝑄) ↔ ⟨(2nd ↾ ((Base‘𝐶) × (Base‘𝐷))), (2nd𝑄)⟩ ∈ (𝑇 Func 𝐷))
119117, 118sylib 209 . 2 (𝜑 → ⟨(2nd ↾ ((Base‘𝐶) × (Base‘𝐷))), (2nd𝑄)⟩ ∈ (𝑇 Func 𝐷))
12022, 119eqeltrd 2844 1 (𝜑𝑄 ∈ (𝑇 Func 𝐷))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 384  w3a 1107   = wceq 1652  wcel 2155  Vcvv 3350  cop 4342   class class class wbr 4811   × cxp 5277  cres 5281  Fun wfun 6064   Fn wfn 6065  wf 6066  ontowfo 6068  cfv 6070  (class class class)co 6846  cmpt2 6848  1st c1st 7368  2nd c2nd 7369  Basecbs 16144  Hom chom 16239  compcco 16240  Catccat 16604  Idccid 16605   Func cfunc 16793   ×c cxpc 17088   2ndF c2ndf 17090
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1890  ax-4 1904  ax-5 2005  ax-6 2070  ax-7 2105  ax-8 2157  ax-9 2164  ax-10 2183  ax-11 2198  ax-12 2211  ax-13 2352  ax-ext 2743  ax-rep 4932  ax-sep 4943  ax-nul 4951  ax-pow 5003  ax-pr 5064  ax-un 7151  ax-cnex 10249  ax-resscn 10250  ax-1cn 10251  ax-icn 10252  ax-addcl 10253  ax-addrcl 10254  ax-mulcl 10255  ax-mulrcl 10256  ax-mulcom 10257  ax-addass 10258  ax-mulass 10259  ax-distr 10260  ax-i2m1 10261  ax-1ne0 10262  ax-1rid 10263  ax-rnegex 10264  ax-rrecex 10265  ax-cnre 10266  ax-pre-lttri 10267  ax-pre-lttrn 10268  ax-pre-ltadd 10269  ax-pre-mulgt0 10270
This theorem depends on definitions:  df-bi 198  df-an 385  df-or 874  df-3or 1108  df-3an 1109  df-tru 1656  df-fal 1666  df-ex 1875  df-nf 1879  df-sb 2063  df-mo 2565  df-eu 2582  df-clab 2752  df-cleq 2758  df-clel 2761  df-nfc 2896  df-ne 2938  df-nel 3041  df-ral 3060  df-rex 3061  df-reu 3062  df-rmo 3063  df-rab 3064  df-v 3352  df-sbc 3599  df-csb 3694  df-dif 3737  df-un 3739  df-in 3741  df-ss 3748  df-pss 3750  df-nul 4082  df-if 4246  df-pw 4319  df-sn 4337  df-pr 4339  df-tp 4341  df-op 4343  df-uni 4597  df-int 4636  df-iun 4680  df-br 4812  df-opab 4874  df-mpt 4891  df-tr 4914  df-id 5187  df-eprel 5192  df-po 5200  df-so 5201  df-fr 5238  df-we 5240  df-xp 5285  df-rel 5286  df-cnv 5287  df-co 5288  df-dm 5289  df-rn 5290  df-res 5291  df-ima 5292  df-pred 5867  df-ord 5913  df-on 5914  df-lim 5915  df-suc 5916  df-iota 6033  df-fun 6072  df-fn 6073  df-f 6074  df-f1 6075  df-fo 6076  df-f1o 6077  df-fv 6078  df-riota 6807  df-ov 6849  df-oprab 6850  df-mpt2 6851  df-om 7268  df-1st 7370  df-2nd 7371  df-wrecs 7614  df-recs 7676  df-rdg 7714  df-1o 7768  df-oadd 7772  df-er 7951  df-map 8066  df-ixp 8118  df-en 8165  df-dom 8166  df-sdom 8167  df-fin 8168  df-pnf 10334  df-mnf 10335  df-xr 10336  df-ltxr 10337  df-le 10338  df-sub 10526  df-neg 10527  df-nn 11279  df-2 11339  df-3 11340  df-4 11341  df-5 11342  df-6 11343  df-7 11344  df-8 11345  df-9 11346  df-n0 11543  df-z 11629  df-dec 11746  df-uz 11892  df-fz 12539  df-struct 16146  df-ndx 16147  df-slot 16148  df-base 16150  df-hom 16252  df-cco 16253  df-cat 16608  df-cid 16609  df-func 16797  df-xpc 17092  df-2ndf 17094
This theorem is referenced by:  prf2nd  17125  1st2ndprf  17126  uncfcl  17155  uncf1  17156  uncf2  17157  curf2ndf  17167  yonedalem1  17192  yonedalem21  17193  yonedalem22  17198
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