Theorem satfdmlem 35841

Description: Lemma for satfdm 35842. (Contributed by AV, 12-Oct-2023.)

Assertion

Ref	Expression
satfdmlem	⊢ (((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) → (∃𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)(∃𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑢)) → ∃𝑎 ∈ ((𝑁 Sat 𝐹)‘𝑌)(∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑎))))

Distinct variable groups:   𝐸,𝑎,𝑏,𝑖,𝑢,𝑣   𝐹,𝑎,𝑏,𝑖,𝑢,𝑣   𝑀,𝑎,𝑏,𝑖,𝑢,𝑣   𝑁,𝑎,𝑏,𝑖,𝑢,𝑣   𝑉,𝑎,𝑏,𝑖,𝑢,𝑣   𝑊,𝑎,𝑏,𝑖,𝑢,𝑣   𝑌,𝑎,𝑏,𝑖,𝑢,𝑣   𝑥,𝑎,𝑏,𝑖,𝑢,𝑣

Allowed substitution hints:   𝐸(𝑥)   𝐹(𝑥)   𝑀(𝑥)   𝑁(𝑥)   𝑉(𝑥)   𝑊(𝑥)   𝑌(𝑥)

Proof of Theorem satfdmlem

Dummy variables 𝑟 𝑠 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		satfrel 35840	. . . . 5 ⊢ ((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) → Rel ((𝑀 Sat 𝐸)‘𝑌))
2	1	adantr 485	. . . 4 ⊢ (((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) → Rel ((𝑀 Sat 𝐸)‘𝑌))
3		1stdm 8038	. . . 4 ⊢ ((Rel ((𝑀 Sat 𝐸)‘𝑌) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → (1st ‘𝑢) ∈ dom ((𝑀 Sat 𝐸)‘𝑌))
4	2, 3	sylan 591	. . 3 ⊢ ((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → (1st ‘𝑢) ∈ dom ((𝑀 Sat 𝐸)‘𝑌))
5		eleq2 2852	. . . . . 6 ⊢ (dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌) → ((1st ‘𝑢) ∈ dom ((𝑀 Sat 𝐸)‘𝑌) ↔ (1st ‘𝑢) ∈ dom ((𝑁 Sat 𝐹)‘𝑌)))
6	5	adantl 486	. . . . 5 ⊢ (((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) → ((1st ‘𝑢) ∈ dom ((𝑀 Sat 𝐸)‘𝑌) ↔ (1st ‘𝑢) ∈ dom ((𝑁 Sat 𝐹)‘𝑌)))
7	6	adantr 485	. . . 4 ⊢ ((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → ((1st ‘𝑢) ∈ dom ((𝑀 Sat 𝐸)‘𝑌) ↔ (1st ‘𝑢) ∈ dom ((𝑁 Sat 𝐹)‘𝑌)))
8		fvex 6896	. . . . . 6 ⊢ (1st ‘𝑢) ∈ V
9		eldm2g 5891	. . . . . 6 ⊢ ((1st ‘𝑢) ∈ V → ((1st ‘𝑢) ∈ dom ((𝑁 Sat 𝐹)‘𝑌) ↔ ∃𝑠⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)))
10	8, 9	ax-mp 5	. . . . 5 ⊢ ((1st ‘𝑢) ∈ dom ((𝑁 Sat 𝐹)‘𝑌) ↔ ∃𝑠⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌))
11		simpr 489	. . . . . . . 8 ⊢ (((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) → ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌))
12	2	ad4antr 744	. . . . . . . . . . . 12 ⊢ (((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → Rel ((𝑀 Sat 𝐸)‘𝑌))
13		1stdm 8038	. . . . . . . . . . . 12 ⊢ ((Rel ((𝑀 Sat 𝐸)‘𝑌) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → (1st ‘𝑣) ∈ dom ((𝑀 Sat 𝐸)‘𝑌))
14	12, 13	sylancom 599	. . . . . . . . . . 11 ⊢ (((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → (1st ‘𝑣) ∈ dom ((𝑀 Sat 𝐸)‘𝑌))
15		eleq2 2852	. . . . . . . . . . . . 13 ⊢ (dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌) → ((1st ‘𝑣) ∈ dom ((𝑀 Sat 𝐸)‘𝑌) ↔ (1st ‘𝑣) ∈ dom ((𝑁 Sat 𝐹)‘𝑌)))
16	15	ad5antlr 747	. . . . . . . . . . . 12 ⊢ (((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → ((1st ‘𝑣) ∈ dom ((𝑀 Sat 𝐸)‘𝑌) ↔ (1st ‘𝑣) ∈ dom ((𝑁 Sat 𝐹)‘𝑌)))
17		fvex 6896	. . . . . . . . . . . . . 14 ⊢ (1st ‘𝑣) ∈ V
18		eldm2g 5891	. . . . . . . . . . . . . 14 ⊢ ((1st ‘𝑣) ∈ V → ((1st ‘𝑣) ∈ dom ((𝑁 Sat 𝐹)‘𝑌) ↔ ∃𝑟⟨(1st ‘𝑣), 𝑟⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)))
19	17, 18	ax-mp 5	. . . . . . . . . . . . 13 ⊢ ((1st ‘𝑣) ∈ dom ((𝑁 Sat 𝐹)‘𝑌) ↔ ∃𝑟⟨(1st ‘𝑣), 𝑟⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌))
20		simpr 489	. . . . . . . . . . . . . . . 16 ⊢ ((((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑣), 𝑟⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) → ⟨(1st ‘𝑣), 𝑟⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌))
21		vex 3459	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ 𝑠 ∈ V
22	8, 21	op1std 7997	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑎 = ⟨(1st ‘𝑢), 𝑠⟩ → (1st ‘𝑎) = (1st ‘𝑢))
23	22	eqcomd 2769	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑎 = ⟨(1st ‘𝑢), 𝑠⟩ → (1st ‘𝑢) = (1st ‘𝑎))
24	23	ad3antlr 743	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑣), 𝑟⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) → (1st ‘𝑢) = (1st ‘𝑎))
25		vex 3459	. . . . . . . . . . . . . . . . . . . . 21 ⊢ 𝑟 ∈ V
26	17, 25	op1std 7997	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑏 = ⟨(1st ‘𝑣), 𝑟⟩ → (1st ‘𝑏) = (1st ‘𝑣))
27	26	eqcomd 2769	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑏 = ⟨(1st ‘𝑣), 𝑟⟩ → (1st ‘𝑣) = (1st ‘𝑏))
28	24, 27	oveqan12d 7431	. . . . . . . . . . . . . . . . . 18 ⊢ (((((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑣), 𝑟⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑏 = ⟨(1st ‘𝑣), 𝑟⟩) → ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏)))
29	28	eqeq2d 2774	. . . . . . . . . . . . . . . . 17 ⊢ (((((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑣), 𝑟⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑏 = ⟨(1st ‘𝑣), 𝑟⟩) → (𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) ↔ 𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏))))
30	29	biimpd 232	. . . . . . . . . . . . . . . 16 ⊢ (((((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑣), 𝑟⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑏 = ⟨(1st ‘𝑣), 𝑟⟩) → (𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) → 𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏))))
31	20, 30	rspcimedv 3573	. . . . . . . . . . . . . . 15 ⊢ ((((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑣), 𝑟⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) → (𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) → ∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏))))
32	31	ex 417	. . . . . . . . . . . . . 14 ⊢ (((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → (⟨(1st ‘𝑣), 𝑟⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌) → (𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) → ∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏)))))
33	32	exlimdv 1963	. . . . . . . . . . . . 13 ⊢ (((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → (∃𝑟⟨(1st ‘𝑣), 𝑟⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌) → (𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) → ∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏)))))
34	19, 33	biimtrid 245	. . . . . . . . . . . 12 ⊢ (((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → ((1st ‘𝑣) ∈ dom ((𝑁 Sat 𝐹)‘𝑌) → (𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) → ∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏)))))
35	16, 34	sylbid 243	. . . . . . . . . . 11 ⊢ (((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → ((1st ‘𝑣) ∈ dom ((𝑀 Sat 𝐸)‘𝑌) → (𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) → ∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏)))))
36	14, 35	mpd 16	. . . . . . . . . 10 ⊢ (((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) ∧ 𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → (𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) → ∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏))))
37	36	rexlimdva 3166	. . . . . . . . 9 ⊢ ((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) → (∃𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) → ∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏))))
38		eqidd 2764	. . . . . . . . . . . . . 14 ⊢ (𝑎 = ⟨(1st ‘𝑢), 𝑠⟩ → 𝑖 = 𝑖)
39	38, 23	goaleq12d 35824	. . . . . . . . . . . . 13 ⊢ (𝑎 = ⟨(1st ‘𝑢), 𝑠⟩ → ∀𝑔𝑖(1st ‘𝑢) = ∀𝑔𝑖(1st ‘𝑎))
40	39	eqeq2d 2774	. . . . . . . . . . . 12 ⊢ (𝑎 = ⟨(1st ‘𝑢), 𝑠⟩ → (𝑥 = ∀𝑔𝑖(1st ‘𝑢) ↔ 𝑥 = ∀𝑔𝑖(1st ‘𝑎)))
41	40	biimpd 232	. . . . . . . . . . 11 ⊢ (𝑎 = ⟨(1st ‘𝑢), 𝑠⟩ → (𝑥 = ∀𝑔𝑖(1st ‘𝑢) → 𝑥 = ∀𝑔𝑖(1st ‘𝑎)))
42	41	adantl 486	. . . . . . . . . 10 ⊢ ((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) → (𝑥 = ∀𝑔𝑖(1st ‘𝑢) → 𝑥 = ∀𝑔𝑖(1st ‘𝑎)))
43	42	reximdv 3180	. . . . . . . . 9 ⊢ ((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) → (∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑢) → ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑎)))
44	37, 43	orim12d 979	. . . . . . . 8 ⊢ ((((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑎 = ⟨(1st ‘𝑢), 𝑠⟩) → ((∃𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑢)) → (∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑎))))
45	11, 44	rspcimedv 3573	. . . . . . 7 ⊢ (((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) ∧ ⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌)) → ((∃𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑢)) → ∃𝑎 ∈ ((𝑁 Sat 𝐹)‘𝑌)(∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑎))))
46	45	ex 417	. . . . . 6 ⊢ ((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → (⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌) → ((∃𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑢)) → ∃𝑎 ∈ ((𝑁 Sat 𝐹)‘𝑌)(∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑎)))))
47	46	exlimdv 1963	. . . . 5 ⊢ ((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → (∃𝑠⟨(1st ‘𝑢), 𝑠⟩ ∈ ((𝑁 Sat 𝐹)‘𝑌) → ((∃𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑢)) → ∃𝑎 ∈ ((𝑁 Sat 𝐹)‘𝑌)(∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑎)))))
48	10, 47	biimtrid 245	. . . 4 ⊢ ((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → ((1st ‘𝑢) ∈ dom ((𝑁 Sat 𝐹)‘𝑌) → ((∃𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑢)) → ∃𝑎 ∈ ((𝑁 Sat 𝐹)‘𝑌)(∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑎)))))
49	7, 48	sylbid 243	. . 3 ⊢ ((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → ((1st ‘𝑢) ∈ dom ((𝑀 Sat 𝐸)‘𝑌) → ((∃𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑢)) → ∃𝑎 ∈ ((𝑁 Sat 𝐹)‘𝑌)(∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑎)))))
50	4, 49	mpd 16	. 2 ⊢ ((((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) ∧ 𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)) → ((∃𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑢)) → ∃𝑎 ∈ ((𝑁 Sat 𝐹)‘𝑌)(∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑎))))
51	50	rexlimdva 3166	1 ⊢ (((𝑀 ∈ 𝑉 ∧ 𝐸 ∈ 𝑊 ∧ 𝑌 ∈ ω) ∧ dom ((𝑀 Sat 𝐸)‘𝑌) = dom ((𝑁 Sat 𝐹)‘𝑌)) → (∃𝑢 ∈ ((𝑀 Sat 𝐸)‘𝑌)(∃𝑣 ∈ ((𝑀 Sat 𝐸)‘𝑌)𝑥 = ((1st ‘𝑢)⊼𝑔(1st ‘𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑢)) → ∃𝑎 ∈ ((𝑁 Sat 𝐹)‘𝑌)(∃𝑏 ∈ ((𝑁 Sat 𝐹)‘𝑌)𝑥 = ((1st ‘𝑎)⊼𝑔(1st ‘𝑏)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st ‘𝑎))))

Syntax hints:   → wi 4   ↔ wb 209   ∧ wa 400   ∨ wo 860   ∧ w3a 1103   = wceq 1570  ∃wex 1809   ∈ wcel 2143  ∃wrex 3089  Vcvv 3455  ⟨cop 4596  dom cdm 5663  Rel wrel 5668  ‘cfv 6538  (class class class)co 7412  ωcom 7863  1^st c1st 7985  ⊼_𝑔cgna 35807  ∀_𝑔cgol 35808   Sat csat 35809

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-rep 5239  ax-sep 5258  ax-nul 5270  ax-pow 5338  ax-pr 5406  ax-un 7734  ax-inf2 9611

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-nf 1814  df-sb 2097  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-ral 3080  df-rex 3090  df-reu 3370  df-rab 3417  df-v 3457  df-sbc 3746  df-csb 3855  df-dif 3909  df-un 3911  df-in 3913  df-ss 3923  df-pss 3926  df-nul 4288  df-if 4489  df-pw 4565  df-sn 4591  df-pr 4593  df-op 4597  df-uni 4874  df-int 4914  df-iun 4959  df-br 5111  df-opab 5175  df-mpt 5194  df-tr 5220  df-id 5558  df-eprel 5563  df-po 5571  df-so 5572  df-fr 5616  df-we 5618  df-xp 5669  df-rel 5670  df-cnv 5671  df-co 5672  df-dm 5673  df-rn 5674  df-res 5675  df-ima 5676  df-pred 6304  df-ord 6365  df-on 6366  df-lim 6367  df-suc 6368  df-iota 6494  df-fun 6540  df-fn 6541  df-f 6542  df-f1 6543  df-fo 6544  df-f1o 6545  df-fv 6546  df-ov 7415  df-oprab 7416  df-mpo 7417  df-om 7864  df-1st 7987  df-2nd 7988  df-frecs 8279  df-wrecs 8310  df-recs 8359  df-rdg 8398  df-goel 35813  df-goal 35815  df-sat 35816

This theorem is referenced by:  satfdm  35842