Theorem fmla1 33981

Description: The valid Godel formulas of height 1 is the set of all formulas of the form (𝑎⊼_𝑔𝑏) and ∀_𝑔𝑘𝑎 with atoms 𝑎, 𝑏 of the form 𝑥 ∈ 𝑦. (Contributed by AV, 20-Sep-2023.)

Assertion

Ref	Expression
fmla1	⊢ (Fmla‘1o) = (({∅} × (ω × ω)) ∪ {𝑥 ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗))})

Distinct variable group:   𝑖,𝑗,𝑥,𝑘,𝑙

Proof of Theorem fmla1

Dummy variables 𝑦 𝑛 𝑧 𝑚 𝑜 𝑝 𝑞 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		df-1o 8412	. . 3 ⊢ 1o = suc ∅
2	1	fveq2i 6845	. 2 ⊢ (Fmla‘1o) = (Fmla‘suc ∅)
3		peano1 7825	. . 3 ⊢ ∅ ∈ ω
4		fmlasuc 33980	. . 3 ⊢ (∅ ∈ ω → (Fmla‘suc ∅) = ((Fmla‘∅) ∪ {𝑥 ∣ ∃𝑝 ∈ (Fmla‘∅)(∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝)}))
5	3, 4	ax-mp 5	. 2 ⊢ (Fmla‘suc ∅) = ((Fmla‘∅) ∪ {𝑥 ∣ ∃𝑝 ∈ (Fmla‘∅)(∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝)})
6		fmla0xp 33977	. . 3 ⊢ (Fmla‘∅) = ({∅} × (ω × ω))
7		fmla0 33976	. . . . . 6 ⊢ (Fmla‘∅) = {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)}
8	7	rexeqi 3312	. . . . 5 ⊢ (∃𝑝 ∈ (Fmla‘∅)(∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝) ↔ ∃𝑝 ∈ {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)} (∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝))
9		eqeq1 2740	. . . . . . . . . 10 ⊢ (𝑦 = 𝑝 → (𝑦 = (𝑖∈𝑔𝑗) ↔ 𝑝 = (𝑖∈𝑔𝑗)))
10	9	2rexbidv 3213	. . . . . . . . 9 ⊢ (𝑦 = 𝑝 → (∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗) ↔ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑝 = (𝑖∈𝑔𝑗)))
11	10	elrab 3645	. . . . . . . 8 ⊢ (𝑝 ∈ {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)} ↔ (𝑝 ∈ V ∧ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑝 = (𝑖∈𝑔𝑗)))
12		oveq1 7364	. . . . . . . . . . . . . . . 16 ⊢ (𝑝 = (𝑖∈𝑔𝑗) → (𝑝⊼𝑔𝑞) = ((𝑖∈𝑔𝑗)⊼𝑔𝑞))
13	12	eqeq2d 2747	. . . . . . . . . . . . . . 15 ⊢ (𝑝 = (𝑖∈𝑔𝑗) → (𝑥 = (𝑝⊼𝑔𝑞) ↔ 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔𝑞)))
14	13	rexbidv 3175	. . . . . . . . . . . . . 14 ⊢ (𝑝 = (𝑖∈𝑔𝑗) → (∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ↔ ∃𝑞 ∈ (Fmla‘∅)𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔𝑞)))
15		eqidd 2737	. . . . . . . . . . . . . . . . 17 ⊢ (𝑝 = (𝑖∈𝑔𝑗) → 𝑘 = 𝑘)
16		id 22	. . . . . . . . . . . . . . . . 17 ⊢ (𝑝 = (𝑖∈𝑔𝑗) → 𝑝 = (𝑖∈𝑔𝑗))
17	15, 16	goaleq12d 33945	. . . . . . . . . . . . . . . 16 ⊢ (𝑝 = (𝑖∈𝑔𝑗) → ∀𝑔𝑘𝑝 = ∀𝑔𝑘(𝑖∈𝑔𝑗))
18	17	eqeq2d 2747	. . . . . . . . . . . . . . 15 ⊢ (𝑝 = (𝑖∈𝑔𝑗) → (𝑥 = ∀𝑔𝑘𝑝 ↔ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)))
19	18	rexbidv 3175	. . . . . . . . . . . . . 14 ⊢ (𝑝 = (𝑖∈𝑔𝑗) → (∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝 ↔ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)))
20	14, 19	orbi12d 917	. . . . . . . . . . . . 13 ⊢ (𝑝 = (𝑖∈𝑔𝑗) → ((∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝) ↔ (∃𝑞 ∈ (Fmla‘∅)𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗))))
21		eqeq1 2740	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑧 = 𝑞 → (𝑧 = (𝑘∈𝑔𝑙) ↔ 𝑞 = (𝑘∈𝑔𝑙)))
22	21	2rexbidv 3213	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑧 = 𝑞 → (∃𝑘 ∈ ω ∃𝑙 ∈ ω 𝑧 = (𝑘∈𝑔𝑙) ↔ ∃𝑘 ∈ ω ∃𝑙 ∈ ω 𝑞 = (𝑘∈𝑔𝑙)))
23		fmla0 33976	. . . . . . . . . . . . . . . . . 18 ⊢ (Fmla‘∅) = {𝑧 ∈ V ∣ ∃𝑘 ∈ ω ∃𝑙 ∈ ω 𝑧 = (𝑘∈𝑔𝑙)}
24	22, 23	elrab2 3648	. . . . . . . . . . . . . . . . 17 ⊢ (𝑞 ∈ (Fmla‘∅) ↔ (𝑞 ∈ V ∧ ∃𝑘 ∈ ω ∃𝑙 ∈ ω 𝑞 = (𝑘∈𝑔𝑙)))
25		oveq2 7365	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑞 = (𝑘∈𝑔𝑙) → ((𝑖∈𝑔𝑗)⊼𝑔𝑞) = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)))
26	25	eqeq2d 2747	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑞 = (𝑘∈𝑔𝑙) → (𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔𝑞) ↔ 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙))))
27	26	biimpcd 248	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔𝑞) → (𝑞 = (𝑘∈𝑔𝑙) → 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙))))
28	27	reximdv 3167	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔𝑞) → (∃𝑙 ∈ ω 𝑞 = (𝑘∈𝑔𝑙) → ∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙))))
29	28	reximdv 3167	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔𝑞) → (∃𝑘 ∈ ω ∃𝑙 ∈ ω 𝑞 = (𝑘∈𝑔𝑙) → ∃𝑘 ∈ ω ∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙))))
30	29	com12 32	. . . . . . . . . . . . . . . . 17 ⊢ (∃𝑘 ∈ ω ∃𝑙 ∈ ω 𝑞 = (𝑘∈𝑔𝑙) → (𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔𝑞) → ∃𝑘 ∈ ω ∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙))))
31	24, 30	simplbiim 505	. . . . . . . . . . . . . . . 16 ⊢ (𝑞 ∈ (Fmla‘∅) → (𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔𝑞) → ∃𝑘 ∈ ω ∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙))))
32	31	rexlimiv 3145	. . . . . . . . . . . . . . 15 ⊢ (∃𝑞 ∈ (Fmla‘∅)𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔𝑞) → ∃𝑘 ∈ ω ∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)))
33	32	orim1i 908	. . . . . . . . . . . . . 14 ⊢ ((∃𝑞 ∈ (Fmla‘∅)𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)) → (∃𝑘 ∈ ω ∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)))
34		r19.43 3125	. . . . . . . . . . . . . 14 ⊢ (∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)) ↔ (∃𝑘 ∈ ω ∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)))
35	33, 34	sylibr 233	. . . . . . . . . . . . 13 ⊢ ((∃𝑞 ∈ (Fmla‘∅)𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)) → ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)))
36	20, 35	syl6bi 252	. . . . . . . . . . . 12 ⊢ (𝑝 = (𝑖∈𝑔𝑗) → ((∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝) → ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗))))
37	36	com12 32	. . . . . . . . . . 11 ⊢ ((∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝) → (𝑝 = (𝑖∈𝑔𝑗) → ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗))))
38	37	reximdv 3167	. . . . . . . . . 10 ⊢ ((∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝) → (∃𝑗 ∈ ω 𝑝 = (𝑖∈𝑔𝑗) → ∃𝑗 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗))))
39	38	reximdv 3167	. . . . . . . . 9 ⊢ ((∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝) → (∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑝 = (𝑖∈𝑔𝑗) → ∃𝑖 ∈ ω ∃𝑗 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗))))
40	39	com12 32	. . . . . . . 8 ⊢ (∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑝 = (𝑖∈𝑔𝑗) → ((∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝) → ∃𝑖 ∈ ω ∃𝑗 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗))))
41	11, 40	simplbiim 505	. . . . . . 7 ⊢ (𝑝 ∈ {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)} → ((∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝) → ∃𝑖 ∈ ω ∃𝑗 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗))))
42	41	rexlimiv 3145	. . . . . 6 ⊢ (∃𝑝 ∈ {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)} (∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝) → ∃𝑖 ∈ ω ∃𝑗 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)))
43		oveq1 7364	. . . . . . . . . . . . 13 ⊢ (𝑖 = 𝑚 → (𝑖∈𝑔𝑗) = (𝑚∈𝑔𝑗))
44	43	oveq1d 7372	. . . . . . . . . . . 12 ⊢ (𝑖 = 𝑚 → ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) = ((𝑚∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)))
45	44	eqeq2d 2747	. . . . . . . . . . 11 ⊢ (𝑖 = 𝑚 → (𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ↔ 𝑥 = ((𝑚∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙))))
46	45	rexbidv 3175	. . . . . . . . . 10 ⊢ (𝑖 = 𝑚 → (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ↔ ∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙))))
47		eqidd 2737	. . . . . . . . . . . 12 ⊢ (𝑖 = 𝑚 → 𝑘 = 𝑘)
48	47, 43	goaleq12d 33945	. . . . . . . . . . 11 ⊢ (𝑖 = 𝑚 → ∀𝑔𝑘(𝑖∈𝑔𝑗) = ∀𝑔𝑘(𝑚∈𝑔𝑗))
49	48	eqeq2d 2747	. . . . . . . . . 10 ⊢ (𝑖 = 𝑚 → (𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗) ↔ 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑗)))
50	46, 49	orbi12d 917	. . . . . . . . 9 ⊢ (𝑖 = 𝑚 → ((∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)) ↔ (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑗))))
51	50	rexbidv 3175	. . . . . . . 8 ⊢ (𝑖 = 𝑚 → (∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)) ↔ ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑗))))
52		oveq2 7365	. . . . . . . . . . . . 13 ⊢ (𝑗 = 𝑛 → (𝑚∈𝑔𝑗) = (𝑚∈𝑔𝑛))
53	52	oveq1d 7372	. . . . . . . . . . . 12 ⊢ (𝑗 = 𝑛 → ((𝑚∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) = ((𝑚∈𝑔𝑛)⊼𝑔(𝑘∈𝑔𝑙)))
54	53	eqeq2d 2747	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑛 → (𝑥 = ((𝑚∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ↔ 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑘∈𝑔𝑙))))
55	54	rexbidv 3175	. . . . . . . . . 10 ⊢ (𝑗 = 𝑛 → (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ↔ ∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑘∈𝑔𝑙))))
56		eqidd 2737	. . . . . . . . . . . 12 ⊢ (𝑗 = 𝑛 → 𝑘 = 𝑘)
57	56, 52	goaleq12d 33945	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑛 → ∀𝑔𝑘(𝑚∈𝑔𝑗) = ∀𝑔𝑘(𝑚∈𝑔𝑛))
58	57	eqeq2d 2747	. . . . . . . . . 10 ⊢ (𝑗 = 𝑛 → (𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑗) ↔ 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛)))
59	55, 58	orbi12d 917	. . . . . . . . 9 ⊢ (𝑗 = 𝑛 → ((∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑗)) ↔ (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛))))
60	59	rexbidv 3175	. . . . . . . 8 ⊢ (𝑗 = 𝑛 → (∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑗)) ↔ ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛))))
61	51, 60	cbvrex2vw 3228	. . . . . . 7 ⊢ (∃𝑖 ∈ ω ∃𝑗 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)) ↔ ∃𝑚 ∈ ω ∃𝑛 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛)))
62		oveq1 7364	. . . . . . . . . . . . . 14 ⊢ (𝑘 = 𝑜 → (𝑘∈𝑔𝑙) = (𝑜∈𝑔𝑙))
63	62	oveq2d 7373	. . . . . . . . . . . . 13 ⊢ (𝑘 = 𝑜 → ((𝑚∈𝑔𝑛)⊼𝑔(𝑘∈𝑔𝑙)) = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)))
64	63	eqeq2d 2747	. . . . . . . . . . . 12 ⊢ (𝑘 = 𝑜 → (𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑘∈𝑔𝑙)) ↔ 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙))))
65	64	rexbidv 3175	. . . . . . . . . . 11 ⊢ (𝑘 = 𝑜 → (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑘∈𝑔𝑙)) ↔ ∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙))))
66		id 22	. . . . . . . . . . . . 13 ⊢ (𝑘 = 𝑜 → 𝑘 = 𝑜)
67		eqidd 2737	. . . . . . . . . . . . 13 ⊢ (𝑘 = 𝑜 → (𝑚∈𝑔𝑛) = (𝑚∈𝑔𝑛))
68	66, 67	goaleq12d 33945	. . . . . . . . . . . 12 ⊢ (𝑘 = 𝑜 → ∀𝑔𝑘(𝑚∈𝑔𝑛) = ∀𝑔𝑜(𝑚∈𝑔𝑛))
69	68	eqeq2d 2747	. . . . . . . . . . 11 ⊢ (𝑘 = 𝑜 → (𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛) ↔ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)))
70	65, 69	orbi12d 917	. . . . . . . . . 10 ⊢ (𝑘 = 𝑜 → ((∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛)) ↔ (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛))))
71	70	cbvrexvw 3226	. . . . . . . . 9 ⊢ (∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛)) ↔ ∃𝑜 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)))
72	3	ne0ii 4297	. . . . . . . . . . . 12 ⊢ ω ≠ ∅
73		r19.44zv 4461	. . . . . . . . . . . 12 ⊢ (ω ≠ ∅ → (∃𝑙 ∈ ω (𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)) ↔ (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛))))
74	72, 73	ax-mp 5	. . . . . . . . . . 11 ⊢ (∃𝑙 ∈ ω (𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)) ↔ (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)))
75		eqeq1 2740	. . . . . . . . . . . . . . . 16 ⊢ (𝑦 = (𝑚∈𝑔𝑛) → (𝑦 = (𝑖∈𝑔𝑗) ↔ (𝑚∈𝑔𝑛) = (𝑖∈𝑔𝑗)))
76	75	2rexbidv 3213	. . . . . . . . . . . . . . 15 ⊢ (𝑦 = (𝑚∈𝑔𝑛) → (∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗) ↔ ∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑚∈𝑔𝑛) = (𝑖∈𝑔𝑗)))
77		ovexd 7392	. . . . . . . . . . . . . . 15 ⊢ (((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ (𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛))) → (𝑚∈𝑔𝑛) ∈ V)
78		simpl 483	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑚 ∈ ω ∧ 𝑛 ∈ ω) → 𝑚 ∈ ω)
79	43	eqeq2d 2747	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑖 = 𝑚 → ((𝑚∈𝑔𝑛) = (𝑖∈𝑔𝑗) ↔ (𝑚∈𝑔𝑛) = (𝑚∈𝑔𝑗)))
80	79	rexbidv 3175	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑖 = 𝑚 → (∃𝑗 ∈ ω (𝑚∈𝑔𝑛) = (𝑖∈𝑔𝑗) ↔ ∃𝑗 ∈ ω (𝑚∈𝑔𝑛) = (𝑚∈𝑔𝑗)))
81	80	adantl 482	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑖 = 𝑚) → (∃𝑗 ∈ ω (𝑚∈𝑔𝑛) = (𝑖∈𝑔𝑗) ↔ ∃𝑗 ∈ ω (𝑚∈𝑔𝑛) = (𝑚∈𝑔𝑗)))
82		simpr 485	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑚 ∈ ω ∧ 𝑛 ∈ ω) → 𝑛 ∈ ω)
83	52	eqeq2d 2747	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑗 = 𝑛 → ((𝑚∈𝑔𝑛) = (𝑚∈𝑔𝑗) ↔ (𝑚∈𝑔𝑛) = (𝑚∈𝑔𝑛)))
84	83	adantl 482	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑗 = 𝑛) → ((𝑚∈𝑔𝑛) = (𝑚∈𝑔𝑗) ↔ (𝑚∈𝑔𝑛) = (𝑚∈𝑔𝑛)))
85		eqidd 2737	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑚 ∈ ω ∧ 𝑛 ∈ ω) → (𝑚∈𝑔𝑛) = (𝑚∈𝑔𝑛))
86	82, 84, 85	rspcedvd 3583	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑚 ∈ ω ∧ 𝑛 ∈ ω) → ∃𝑗 ∈ ω (𝑚∈𝑔𝑛) = (𝑚∈𝑔𝑗))
87	78, 81, 86	rspcedvd 3583	. . . . . . . . . . . . . . . 16 ⊢ ((𝑚 ∈ ω ∧ 𝑛 ∈ ω) → ∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑚∈𝑔𝑛) = (𝑖∈𝑔𝑗))
88	87	ad5ant12 754	. . . . . . . . . . . . . . 15 ⊢ (((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ (𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛))) → ∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑚∈𝑔𝑛) = (𝑖∈𝑔𝑗))
89	76, 77, 88	elrabd 3647	. . . . . . . . . . . . . 14 ⊢ (((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ (𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛))) → (𝑚∈𝑔𝑛) ∈ {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)})
90		oveq1 7364	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑝 = (𝑚∈𝑔𝑛) → (𝑝⊼𝑔𝑞) = ((𝑚∈𝑔𝑛)⊼𝑔𝑞))
91	90	eqeq2d 2747	. . . . . . . . . . . . . . . . 17 ⊢ (𝑝 = (𝑚∈𝑔𝑛) → (𝑥 = (𝑝⊼𝑔𝑞) ↔ 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔𝑞)))
92	91	rexbidv 3175	. . . . . . . . . . . . . . . 16 ⊢ (𝑝 = (𝑚∈𝑔𝑛) → (∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ↔ ∃𝑞 ∈ (Fmla‘∅)𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔𝑞)))
93		eqidd 2737	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑝 = (𝑚∈𝑔𝑛) → 𝑘 = 𝑘)
94		id 22	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑝 = (𝑚∈𝑔𝑛) → 𝑝 = (𝑚∈𝑔𝑛))
95	93, 94	goaleq12d 33945	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑝 = (𝑚∈𝑔𝑛) → ∀𝑔𝑘𝑝 = ∀𝑔𝑘(𝑚∈𝑔𝑛))
96	95	eqeq2d 2747	. . . . . . . . . . . . . . . . 17 ⊢ (𝑝 = (𝑚∈𝑔𝑛) → (𝑥 = ∀𝑔𝑘𝑝 ↔ 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛)))
97	96	rexbidv 3175	. . . . . . . . . . . . . . . 16 ⊢ (𝑝 = (𝑚∈𝑔𝑛) → (∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝 ↔ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛)))
98	92, 97	orbi12d 917	. . . . . . . . . . . . . . 15 ⊢ (𝑝 = (𝑚∈𝑔𝑛) → ((∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝) ↔ (∃𝑞 ∈ (Fmla‘∅)𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛))))
99	98	adantl 482	. . . . . . . . . . . . . 14 ⊢ ((((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ (𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛))) ∧ 𝑝 = (𝑚∈𝑔𝑛)) → ((∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝) ↔ (∃𝑞 ∈ (Fmla‘∅)𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛))))
100		ovexd 7392	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) → (𝑜∈𝑔𝑙) ∈ V)
101		simpr 485	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) → 𝑜 ∈ ω)
102	101	adantr 481	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) → 𝑜 ∈ ω)
103		oveq1 7364	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑖 = 𝑜 → (𝑖∈𝑔𝑗) = (𝑜∈𝑔𝑗))
104	103	eqeq2d 2747	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑖 = 𝑜 → ((𝑜∈𝑔𝑙) = (𝑖∈𝑔𝑗) ↔ (𝑜∈𝑔𝑙) = (𝑜∈𝑔𝑗)))
105	104	rexbidv 3175	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑖 = 𝑜 → (∃𝑗 ∈ ω (𝑜∈𝑔𝑙) = (𝑖∈𝑔𝑗) ↔ ∃𝑗 ∈ ω (𝑜∈𝑔𝑙) = (𝑜∈𝑔𝑗)))
106	105	adantl 482	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ 𝑖 = 𝑜) → (∃𝑗 ∈ ω (𝑜∈𝑔𝑙) = (𝑖∈𝑔𝑗) ↔ ∃𝑗 ∈ ω (𝑜∈𝑔𝑙) = (𝑜∈𝑔𝑗)))
107		simpr 485	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) → 𝑙 ∈ ω)
108		oveq2 7365	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑗 = 𝑙 → (𝑜∈𝑔𝑗) = (𝑜∈𝑔𝑙))
109	108	eqeq2d 2747	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑗 = 𝑙 → ((𝑜∈𝑔𝑙) = (𝑜∈𝑔𝑗) ↔ (𝑜∈𝑔𝑙) = (𝑜∈𝑔𝑙)))
110	109	adantl 482	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ 𝑗 = 𝑙) → ((𝑜∈𝑔𝑙) = (𝑜∈𝑔𝑗) ↔ (𝑜∈𝑔𝑙) = (𝑜∈𝑔𝑙)))
111		eqidd 2737	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) → (𝑜∈𝑔𝑙) = (𝑜∈𝑔𝑙))
112	107, 110, 111	rspcedvd 3583	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) → ∃𝑗 ∈ ω (𝑜∈𝑔𝑙) = (𝑜∈𝑔𝑗))
113	102, 106, 112	rspcedvd 3583	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) → ∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑜∈𝑔𝑙) = (𝑖∈𝑔𝑗))
114		eqeq1 2740	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑝 = (𝑜∈𝑔𝑙) → (𝑝 = (𝑖∈𝑔𝑗) ↔ (𝑜∈𝑔𝑙) = (𝑖∈𝑔𝑗)))
115	114	2rexbidv 3213	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑝 = (𝑜∈𝑔𝑙) → (∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑝 = (𝑖∈𝑔𝑗) ↔ ∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑜∈𝑔𝑙) = (𝑖∈𝑔𝑗)))
116		fmla0 33976	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (Fmla‘∅) = {𝑝 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑝 = (𝑖∈𝑔𝑗)}
117	115, 116	elrab2 3648	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑜∈𝑔𝑙) ∈ (Fmla‘∅) ↔ ((𝑜∈𝑔𝑙) ∈ V ∧ ∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑜∈𝑔𝑙) = (𝑖∈𝑔𝑗)))
118	100, 113, 117	sylanbrc 583	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) → (𝑜∈𝑔𝑙) ∈ (Fmla‘∅))
119	118	adantr 481	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙))) → (𝑜∈𝑔𝑙) ∈ (Fmla‘∅))
120		oveq2 7365	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑞 = (𝑜∈𝑔𝑙) → ((𝑚∈𝑔𝑛)⊼𝑔𝑞) = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)))
121	120	eqeq2d 2747	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑞 = (𝑜∈𝑔𝑙) → (𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔𝑞) ↔ 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙))))
122	121	adantl 482	. . . . . . . . . . . . . . . . . 18 ⊢ ((((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙))) ∧ 𝑞 = (𝑜∈𝑔𝑙)) → (𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔𝑞) ↔ 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙))))
123		simpr 485	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙))) → 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)))
124	119, 122, 123	rspcedvd 3583	. . . . . . . . . . . . . . . . 17 ⊢ (((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙))) → ∃𝑞 ∈ (Fmla‘∅)𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔𝑞))
125	124	ex 413	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) → (𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) → ∃𝑞 ∈ (Fmla‘∅)𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔𝑞)))
126	102	adantr 481	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)) → 𝑜 ∈ ω)
127	69	adantl 482	. . . . . . . . . . . . . . . . . 18 ⊢ ((((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)) ∧ 𝑘 = 𝑜) → (𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛) ↔ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)))
128		simpr 485	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)) → 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛))
129	126, 127, 128	rspcedvd 3583	. . . . . . . . . . . . . . . . 17 ⊢ (((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)) → ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛))
130	129	ex 413	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) → (𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛) → ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛)))
131	125, 130	orim12d 963	. . . . . . . . . . . . . . 15 ⊢ ((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) → ((𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)) → (∃𝑞 ∈ (Fmla‘∅)𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛))))
132	131	imp 407	. . . . . . . . . . . . . 14 ⊢ (((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ (𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛))) → (∃𝑞 ∈ (Fmla‘∅)𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛)))
133	89, 99, 132	rspcedvd 3583	. . . . . . . . . . . . 13 ⊢ (((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) ∧ (𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛))) → ∃𝑝 ∈ {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)} (∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝))
134	133	ex 413	. . . . . . . . . . . 12 ⊢ ((((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) ∧ 𝑙 ∈ ω) → ((𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)) → ∃𝑝 ∈ {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)} (∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝)))
135	134	rexlimdva 3152	. . . . . . . . . . 11 ⊢ (((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) → (∃𝑙 ∈ ω (𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)) → ∃𝑝 ∈ {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)} (∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝)))
136	74, 135	biimtrrid 242	. . . . . . . . . 10 ⊢ (((𝑚 ∈ ω ∧ 𝑛 ∈ ω) ∧ 𝑜 ∈ ω) → ((∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)) → ∃𝑝 ∈ {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)} (∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝)))
137	136	rexlimdva 3152	. . . . . . . . 9 ⊢ ((𝑚 ∈ ω ∧ 𝑛 ∈ ω) → (∃𝑜 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑜∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑜(𝑚∈𝑔𝑛)) → ∃𝑝 ∈ {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)} (∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝)))
138	71, 137	biimtrid 241	. . . . . . . 8 ⊢ ((𝑚 ∈ ω ∧ 𝑛 ∈ ω) → (∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛)) → ∃𝑝 ∈ {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)} (∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝)))
139	138	rexlimivv 3196	. . . . . . 7 ⊢ (∃𝑚 ∈ ω ∃𝑛 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑚∈𝑔𝑛)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑚∈𝑔𝑛)) → ∃𝑝 ∈ {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)} (∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝))
140	61, 139	sylbi 216	. . . . . 6 ⊢ (∃𝑖 ∈ ω ∃𝑗 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)) → ∃𝑝 ∈ {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)} (∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝))
141	42, 140	impbii 208	. . . . 5 ⊢ (∃𝑝 ∈ {𝑦 ∈ V ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑦 = (𝑖∈𝑔𝑗)} (∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝) ↔ ∃𝑖 ∈ ω ∃𝑗 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)))
142	8, 141	bitri 274	. . . 4 ⊢ (∃𝑝 ∈ (Fmla‘∅)(∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝) ↔ ∃𝑖 ∈ ω ∃𝑗 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗)))
143	142	abbii 2806	. . 3 ⊢ {𝑥 ∣ ∃𝑝 ∈ (Fmla‘∅)(∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝)} = {𝑥 ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗))}
144	6, 143	uneq12i 4121	. 2 ⊢ ((Fmla‘∅) ∪ {𝑥 ∣ ∃𝑝 ∈ (Fmla‘∅)(∃𝑞 ∈ (Fmla‘∅)𝑥 = (𝑝⊼𝑔𝑞) ∨ ∃𝑘 ∈ ω 𝑥 = ∀𝑔𝑘𝑝)}) = (({∅} × (ω × ω)) ∪ {𝑥 ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗))})
145	2, 5, 144	3eqtri 2768	1 ⊢ (Fmla‘1o) = (({∅} × (ω × ω)) ∪ {𝑥 ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω ∃𝑘 ∈ ω (∃𝑙 ∈ ω 𝑥 = ((𝑖∈𝑔𝑗)⊼𝑔(𝑘∈𝑔𝑙)) ∨ 𝑥 = ∀𝑔𝑘(𝑖∈𝑔𝑗))})

Syntax hints:   → wi 4   ↔ wb 205   ∧ wa 396   ∨ wo 845   = wceq 1541   ∈ wcel 2106  {cab 2713   ≠ wne 2943  ∃wrex 3073  {crab 3407  Vcvv 3445   ∪ cun 3908  ∅c0 4282  {csn 4586   × cxp 5631  suc csuc 6319  ‘cfv 6496  (class class class)co 7357  ωcom 7802  1_oc1o 8405  ∈_𝑔cgoe 33927  ⊼_𝑔cgna 33928  ∀_𝑔cgol 33929  Fmlacfmla 33931

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 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2707  ax-rep 5242  ax-sep 5256  ax-nul 5263  ax-pow 5320  ax-pr 5384  ax-un 7672  ax-inf2 9577

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 846  df-3or 1088  df-3an 1089  df-tru 1544  df-fal 1554  df-ex 1782  df-nf 1786  df-sb 2068  df-mo 2538  df-eu 2567  df-clab 2714  df-cleq 2728  df-clel 2814  df-nfc 2889  df-ne 2944  df-nel 3050  df-ral 3065  df-rex 3074  df-reu 3354  df-rab 3408  df-v 3447  df-sbc 3740  df-csb 3856  df-dif 3913  df-un 3915  df-in 3917  df-ss 3927  df-pss 3929  df-nul 4283  df-if 4487  df-pw 4562  df-sn 4587  df-pr 4589  df-op 4593  df-uni 4866  df-iun 4956  df-br 5106  df-opab 5168  df-mpt 5189  df-tr 5223  df-id 5531  df-eprel 5537  df-po 5545  df-so 5546  df-fr 5588  df-we 5590  df-xp 5639  df-rel 5640  df-cnv 5641  df-co 5642  df-dm 5643  df-rn 5644  df-res 5645  df-ima 5646  df-pred 6253  df-ord 6320  df-on 6321  df-lim 6322  df-suc 6323  df-iota 6448  df-fun 6498  df-fn 6499  df-f 6500  df-f1 6501  df-fo 6502  df-f1o 6503  df-fv 6504  df-ov 7360  df-oprab 7361  df-mpo 7362  df-om 7803  df-1st 7921  df-2nd 7922  df-frecs 8212  df-wrecs 8243  df-recs 8317  df-rdg 8356  df-1o 8412  df-map 8767  df-goel 33934  df-goal 33936  df-sat 33937  df-fmla 33939

This theorem is referenced by:  2goelgoanfmla1  34018