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Theorem prfval 17449
Description: Value of the pairing functor. (Contributed by Mario Carneiro, 12-Jan-2017.)
Hypotheses
Ref Expression
prfval.k 𝑃 = (𝐹 ⟨,⟩F 𝐺)
prfval.b 𝐵 = (Base‘𝐶)
prfval.h 𝐻 = (Hom ‘𝐶)
prfval.c (𝜑𝐹 ∈ (𝐶 Func 𝐷))
prfval.d (𝜑𝐺 ∈ (𝐶 Func 𝐸))
Assertion
Ref Expression
prfval (𝜑𝑃 = ⟨(𝑥𝐵 ↦ ⟨((1st𝐹)‘𝑥), ((1st𝐺)‘𝑥)⟩), (𝑥𝐵, 𝑦𝐵 ↦ ( ∈ (𝑥𝐻𝑦) ↦ ⟨((𝑥(2nd𝐹)𝑦)‘), ((𝑥(2nd𝐺)𝑦)‘)⟩))⟩)
Distinct variable groups:   𝑥,,𝑦,𝐵   𝑥,𝐶,𝑦   ,𝐹,𝑥,𝑦   𝜑,,𝑥,𝑦   𝑥,𝐷,𝑦   ,𝐺,𝑥,𝑦   ,𝐻,𝑥,𝑦
Allowed substitution hints:   𝐶()   𝐷()   𝑃(𝑥,𝑦,)   𝐸(𝑥,𝑦,)

Proof of Theorem prfval
Dummy variables 𝑓 𝑏 𝑔 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 prfval.k . 2 𝑃 = (𝐹 ⟨,⟩F 𝐺)
2 df-prf 17425 . . . 4 ⟨,⟩F = (𝑓 ∈ V, 𝑔 ∈ V ↦ dom (1st𝑓) / 𝑏⟨(𝑥𝑏 ↦ ⟨((1st𝑓)‘𝑥), ((1st𝑔)‘𝑥)⟩), (𝑥𝑏, 𝑦𝑏 ↦ ( ∈ dom (𝑥(2nd𝑓)𝑦) ↦ ⟨((𝑥(2nd𝑓)𝑦)‘), ((𝑥(2nd𝑔)𝑦)‘)⟩))⟩)
32a1i 11 . . 3 (𝜑 → ⟨,⟩F = (𝑓 ∈ V, 𝑔 ∈ V ↦ dom (1st𝑓) / 𝑏⟨(𝑥𝑏 ↦ ⟨((1st𝑓)‘𝑥), ((1st𝑔)‘𝑥)⟩), (𝑥𝑏, 𝑦𝑏 ↦ ( ∈ dom (𝑥(2nd𝑓)𝑦) ↦ ⟨((𝑥(2nd𝑓)𝑦)‘), ((𝑥(2nd𝑔)𝑦)‘)⟩))⟩))
4 fvex 6674 . . . . . 6 (1st𝑓) ∈ V
54dmex 7611 . . . . 5 dom (1st𝑓) ∈ V
65a1i 11 . . . 4 ((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) → dom (1st𝑓) ∈ V)
7 simprl 770 . . . . . . 7 ((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) → 𝑓 = 𝐹)
87fveq2d 6665 . . . . . 6 ((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) → (1st𝑓) = (1st𝐹))
98dmeqd 5761 . . . . 5 ((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) → dom (1st𝑓) = dom (1st𝐹))
10 prfval.b . . . . . . . 8 𝐵 = (Base‘𝐶)
11 eqid 2824 . . . . . . . 8 (Base‘𝐷) = (Base‘𝐷)
12 relfunc 17132 . . . . . . . . 9 Rel (𝐶 Func 𝐷)
13 prfval.c . . . . . . . . 9 (𝜑𝐹 ∈ (𝐶 Func 𝐷))
14 1st2ndbr 7736 . . . . . . . . 9 ((Rel (𝐶 Func 𝐷) ∧ 𝐹 ∈ (𝐶 Func 𝐷)) → (1st𝐹)(𝐶 Func 𝐷)(2nd𝐹))
1512, 13, 14sylancr 590 . . . . . . . 8 (𝜑 → (1st𝐹)(𝐶 Func 𝐷)(2nd𝐹))
1610, 11, 15funcf1 17136 . . . . . . 7 (𝜑 → (1st𝐹):𝐵⟶(Base‘𝐷))
1716fdmd 6513 . . . . . 6 (𝜑 → dom (1st𝐹) = 𝐵)
1817adantr 484 . . . . 5 ((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) → dom (1st𝐹) = 𝐵)
199, 18eqtrd 2859 . . . 4 ((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) → dom (1st𝑓) = 𝐵)
20 simpr 488 . . . . . 6 (((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) → 𝑏 = 𝐵)
21 simplrl 776 . . . . . . . . 9 (((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) → 𝑓 = 𝐹)
2221fveq2d 6665 . . . . . . . 8 (((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) → (1st𝑓) = (1st𝐹))
2322fveq1d 6663 . . . . . . 7 (((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) → ((1st𝑓)‘𝑥) = ((1st𝐹)‘𝑥))
24 simplrr 777 . . . . . . . . 9 (((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) → 𝑔 = 𝐺)
2524fveq2d 6665 . . . . . . . 8 (((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) → (1st𝑔) = (1st𝐺))
2625fveq1d 6663 . . . . . . 7 (((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) → ((1st𝑔)‘𝑥) = ((1st𝐺)‘𝑥))
2723, 26opeq12d 4797 . . . . . 6 (((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) → ⟨((1st𝑓)‘𝑥), ((1st𝑔)‘𝑥)⟩ = ⟨((1st𝐹)‘𝑥), ((1st𝐺)‘𝑥)⟩)
2820, 27mpteq12dv 5137 . . . . 5 (((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) → (𝑥𝑏 ↦ ⟨((1st𝑓)‘𝑥), ((1st𝑔)‘𝑥)⟩) = (𝑥𝐵 ↦ ⟨((1st𝐹)‘𝑥), ((1st𝐺)‘𝑥)⟩))
29 eqidd 2825 . . . . . . 7 (((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) → ( ∈ dom (𝑥(2nd𝑓)𝑦) ↦ ⟨((𝑥(2nd𝑓)𝑦)‘), ((𝑥(2nd𝑔)𝑦)‘)⟩) = ( ∈ dom (𝑥(2nd𝑓)𝑦) ↦ ⟨((𝑥(2nd𝑓)𝑦)‘), ((𝑥(2nd𝑔)𝑦)‘)⟩))
3020, 20, 29mpoeq123dv 7222 . . . . . 6 (((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) → (𝑥𝑏, 𝑦𝑏 ↦ ( ∈ dom (𝑥(2nd𝑓)𝑦) ↦ ⟨((𝑥(2nd𝑓)𝑦)‘), ((𝑥(2nd𝑔)𝑦)‘)⟩)) = (𝑥𝐵, 𝑦𝐵 ↦ ( ∈ dom (𝑥(2nd𝑓)𝑦) ↦ ⟨((𝑥(2nd𝑓)𝑦)‘), ((𝑥(2nd𝑔)𝑦)‘)⟩)))
3121ad2antrr 725 . . . . . . . . . . . . 13 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → 𝑓 = 𝐹)
3231fveq2d 6665 . . . . . . . . . . . 12 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → (2nd𝑓) = (2nd𝐹))
3332oveqd 7166 . . . . . . . . . . 11 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → (𝑥(2nd𝑓)𝑦) = (𝑥(2nd𝐹)𝑦))
3433dmeqd 5761 . . . . . . . . . 10 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → dom (𝑥(2nd𝑓)𝑦) = dom (𝑥(2nd𝐹)𝑦))
35 prfval.h . . . . . . . . . . . 12 𝐻 = (Hom ‘𝐶)
36 eqid 2824 . . . . . . . . . . . 12 (Hom ‘𝐷) = (Hom ‘𝐷)
3715ad4antr 731 . . . . . . . . . . . 12 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → (1st𝐹)(𝐶 Func 𝐷)(2nd𝐹))
38 simplr 768 . . . . . . . . . . . 12 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → 𝑥𝐵)
39 simpr 488 . . . . . . . . . . . 12 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → 𝑦𝐵)
4010, 35, 36, 37, 38, 39funcf2 17138 . . . . . . . . . . 11 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → (𝑥(2nd𝐹)𝑦):(𝑥𝐻𝑦)⟶(((1st𝐹)‘𝑥)(Hom ‘𝐷)((1st𝐹)‘𝑦)))
4140fdmd 6513 . . . . . . . . . 10 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → dom (𝑥(2nd𝐹)𝑦) = (𝑥𝐻𝑦))
4234, 41eqtrd 2859 . . . . . . . . 9 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → dom (𝑥(2nd𝑓)𝑦) = (𝑥𝐻𝑦))
4333fveq1d 6663 . . . . . . . . . 10 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → ((𝑥(2nd𝑓)𝑦)‘) = ((𝑥(2nd𝐹)𝑦)‘))
4424ad2antrr 725 . . . . . . . . . . . . 13 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → 𝑔 = 𝐺)
4544fveq2d 6665 . . . . . . . . . . . 12 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → (2nd𝑔) = (2nd𝐺))
4645oveqd 7166 . . . . . . . . . . 11 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → (𝑥(2nd𝑔)𝑦) = (𝑥(2nd𝐺)𝑦))
4746fveq1d 6663 . . . . . . . . . 10 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → ((𝑥(2nd𝑔)𝑦)‘) = ((𝑥(2nd𝐺)𝑦)‘))
4843, 47opeq12d 4797 . . . . . . . . 9 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → ⟨((𝑥(2nd𝑓)𝑦)‘), ((𝑥(2nd𝑔)𝑦)‘)⟩ = ⟨((𝑥(2nd𝐹)𝑦)‘), ((𝑥(2nd𝐺)𝑦)‘)⟩)
4942, 48mpteq12dv 5137 . . . . . . . 8 (((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵) ∧ 𝑦𝐵) → ( ∈ dom (𝑥(2nd𝑓)𝑦) ↦ ⟨((𝑥(2nd𝑓)𝑦)‘), ((𝑥(2nd𝑔)𝑦)‘)⟩) = ( ∈ (𝑥𝐻𝑦) ↦ ⟨((𝑥(2nd𝐹)𝑦)‘), ((𝑥(2nd𝐺)𝑦)‘)⟩))
50493impa 1107 . . . . . . 7 ((((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) ∧ 𝑥𝐵𝑦𝐵) → ( ∈ dom (𝑥(2nd𝑓)𝑦) ↦ ⟨((𝑥(2nd𝑓)𝑦)‘), ((𝑥(2nd𝑔)𝑦)‘)⟩) = ( ∈ (𝑥𝐻𝑦) ↦ ⟨((𝑥(2nd𝐹)𝑦)‘), ((𝑥(2nd𝐺)𝑦)‘)⟩))
5150mpoeq3dva 7224 . . . . . 6 (((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) → (𝑥𝐵, 𝑦𝐵 ↦ ( ∈ dom (𝑥(2nd𝑓)𝑦) ↦ ⟨((𝑥(2nd𝑓)𝑦)‘), ((𝑥(2nd𝑔)𝑦)‘)⟩)) = (𝑥𝐵, 𝑦𝐵 ↦ ( ∈ (𝑥𝐻𝑦) ↦ ⟨((𝑥(2nd𝐹)𝑦)‘), ((𝑥(2nd𝐺)𝑦)‘)⟩)))
5230, 51eqtrd 2859 . . . . 5 (((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) → (𝑥𝑏, 𝑦𝑏 ↦ ( ∈ dom (𝑥(2nd𝑓)𝑦) ↦ ⟨((𝑥(2nd𝑓)𝑦)‘), ((𝑥(2nd𝑔)𝑦)‘)⟩)) = (𝑥𝐵, 𝑦𝐵 ↦ ( ∈ (𝑥𝐻𝑦) ↦ ⟨((𝑥(2nd𝐹)𝑦)‘), ((𝑥(2nd𝐺)𝑦)‘)⟩)))
5328, 52opeq12d 4797 . . . 4 (((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) ∧ 𝑏 = 𝐵) → ⟨(𝑥𝑏 ↦ ⟨((1st𝑓)‘𝑥), ((1st𝑔)‘𝑥)⟩), (𝑥𝑏, 𝑦𝑏 ↦ ( ∈ dom (𝑥(2nd𝑓)𝑦) ↦ ⟨((𝑥(2nd𝑓)𝑦)‘), ((𝑥(2nd𝑔)𝑦)‘)⟩))⟩ = ⟨(𝑥𝐵 ↦ ⟨((1st𝐹)‘𝑥), ((1st𝐺)‘𝑥)⟩), (𝑥𝐵, 𝑦𝐵 ↦ ( ∈ (𝑥𝐻𝑦) ↦ ⟨((𝑥(2nd𝐹)𝑦)‘), ((𝑥(2nd𝐺)𝑦)‘)⟩))⟩)
546, 19, 53csbied2 3903 . . 3 ((𝜑 ∧ (𝑓 = 𝐹𝑔 = 𝐺)) → dom (1st𝑓) / 𝑏⟨(𝑥𝑏 ↦ ⟨((1st𝑓)‘𝑥), ((1st𝑔)‘𝑥)⟩), (𝑥𝑏, 𝑦𝑏 ↦ ( ∈ dom (𝑥(2nd𝑓)𝑦) ↦ ⟨((𝑥(2nd𝑓)𝑦)‘), ((𝑥(2nd𝑔)𝑦)‘)⟩))⟩ = ⟨(𝑥𝐵 ↦ ⟨((1st𝐹)‘𝑥), ((1st𝐺)‘𝑥)⟩), (𝑥𝐵, 𝑦𝐵 ↦ ( ∈ (𝑥𝐻𝑦) ↦ ⟨((𝑥(2nd𝐹)𝑦)‘), ((𝑥(2nd𝐺)𝑦)‘)⟩))⟩)
5513elexd 3500 . . 3 (𝜑𝐹 ∈ V)
56 prfval.d . . . 4 (𝜑𝐺 ∈ (𝐶 Func 𝐸))
5756elexd 3500 . . 3 (𝜑𝐺 ∈ V)
58 opex 5343 . . . 4 ⟨(𝑥𝐵 ↦ ⟨((1st𝐹)‘𝑥), ((1st𝐺)‘𝑥)⟩), (𝑥𝐵, 𝑦𝐵 ↦ ( ∈ (𝑥𝐻𝑦) ↦ ⟨((𝑥(2nd𝐹)𝑦)‘), ((𝑥(2nd𝐺)𝑦)‘)⟩))⟩ ∈ V
5958a1i 11 . . 3 (𝜑 → ⟨(𝑥𝐵 ↦ ⟨((1st𝐹)‘𝑥), ((1st𝐺)‘𝑥)⟩), (𝑥𝐵, 𝑦𝐵 ↦ ( ∈ (𝑥𝐻𝑦) ↦ ⟨((𝑥(2nd𝐹)𝑦)‘), ((𝑥(2nd𝐺)𝑦)‘)⟩))⟩ ∈ V)
603, 54, 55, 57, 59ovmpod 7295 . 2 (𝜑 → (𝐹 ⟨,⟩F 𝐺) = ⟨(𝑥𝐵 ↦ ⟨((1st𝐹)‘𝑥), ((1st𝐺)‘𝑥)⟩), (𝑥𝐵, 𝑦𝐵 ↦ ( ∈ (𝑥𝐻𝑦) ↦ ⟨((𝑥(2nd𝐹)𝑦)‘), ((𝑥(2nd𝐺)𝑦)‘)⟩))⟩)
611, 60syl5eq 2871 1 (𝜑𝑃 = ⟨(𝑥𝐵 ↦ ⟨((1st𝐹)‘𝑥), ((1st𝐺)‘𝑥)⟩), (𝑥𝐵, 𝑦𝐵 ↦ ( ∈ (𝑥𝐻𝑦) ↦ ⟨((𝑥(2nd𝐹)𝑦)‘), ((𝑥(2nd𝐺)𝑦)‘)⟩))⟩)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 399   = wceq 1538  wcel 2115  Vcvv 3480  csb 3866  cop 4556   class class class wbr 5052  cmpt 5132  dom cdm 5542  Rel wrel 5547  cfv 6343  (class class class)co 7149  cmpo 7151  1st c1st 7682  2nd c2nd 7683  Basecbs 16483  Hom chom 16576   Func cfunc 17124   ⟨,⟩F cprf 17421
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 1971  ax-7 2016  ax-8 2117  ax-9 2125  ax-10 2146  ax-11 2162  ax-12 2179  ax-ext 2796  ax-rep 5176  ax-sep 5189  ax-nul 5196  ax-pow 5253  ax-pr 5317  ax-un 7455
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2071  df-mo 2624  df-eu 2655  df-clab 2803  df-cleq 2817  df-clel 2896  df-nfc 2964  df-ne 3015  df-ral 3138  df-rex 3139  df-reu 3140  df-rab 3142  df-v 3482  df-sbc 3759  df-csb 3867  df-dif 3922  df-un 3924  df-in 3926  df-ss 3936  df-nul 4277  df-if 4451  df-pw 4524  df-sn 4551  df-pr 4553  df-op 4557  df-uni 4825  df-iun 4907  df-br 5053  df-opab 5115  df-mpt 5133  df-id 5447  df-xp 5548  df-rel 5549  df-cnv 5550  df-co 5551  df-dm 5552  df-rn 5553  df-res 5554  df-ima 5555  df-iota 6302  df-fun 6345  df-fn 6346  df-f 6347  df-f1 6348  df-fo 6349  df-f1o 6350  df-fv 6351  df-ov 7152  df-oprab 7153  df-mpo 7154  df-1st 7684  df-2nd 7685  df-map 8404  df-ixp 8458  df-func 17128  df-prf 17425
This theorem is referenced by:  prf1  17450  prf2fval  17451  prfcl  17453  prf1st  17454  prf2nd  17455  1st2ndprf  17456
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