Theorem relexpindlem 14424

Description: Principle of transitive induction, finite and non-class version. The first three hypotheses give various existences, the next three give necessary substitutions and the last two are the basis and the induction hypothesis. (Contributed by Drahflow, 12-Nov-2015.) (Revised by RP, 30-May-2020.) (Proof shortened by Peter Mazsa, 2-Oct-2022.)

Hypotheses

Ref	Expression
relexpindlem.1	⊢ (𝜂 → Rel 𝑅)
relexpindlem.2	⊢ (𝜂 → 𝑅 ∈ V)
relexpindlem.3	⊢ (𝜂 → 𝑆 ∈ V)
relexpindlem.4	⊢ (𝑖 = 𝑆 → (𝜑 ↔ 𝜒))
relexpindlem.5	⊢ (𝑖 = 𝑥 → (𝜑 ↔ 𝜓))
relexpindlem.6	⊢ (𝑖 = 𝑗 → (𝜑 ↔ 𝜃))
relexpindlem.7	⊢ (𝜂 → 𝜒)
relexpindlem.8	⊢ (𝜂 → (𝑗𝑅𝑥 → (𝜃 → 𝜓)))

Assertion

Ref	Expression
relexpindlem	⊢ (𝜂 → (𝑛 ∈ ℕ0 → (𝑆(𝑅↑𝑟𝑛)𝑥 → 𝜓)))

Distinct variable groups:   𝑥,𝑖   𝑥,𝑛   𝑖,𝑗,𝑅,𝑥   𝑆,𝑖,𝑗,𝑥   𝜂,𝑖,𝑗,𝑥   𝜑,𝑗,𝑥   𝜓,𝑖,𝑗   𝜒,𝑖   𝜃,𝑖   𝜂,𝑥

Allowed substitution hints:   𝜑(𝑖,𝑛)   𝜓(𝑥,𝑛)   𝜒(𝑥,𝑗,𝑛)   𝜃(𝑥,𝑗,𝑛)   𝜂(𝑛)   𝑅(𝑛)   𝑆(𝑛)

Proof of Theorem relexpindlem

Dummy variables 𝑙 𝑘 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		eleq1 2902	. . . . . . 7 ⊢ (𝑘 = 0 → (𝑘 ∈ ℕ0 ↔ 0 ∈ ℕ0))
2	1	anbi2d 630	. . . . . 6 ⊢ (𝑘 = 0 → ((𝜂 ∧ 𝑘 ∈ ℕ0) ↔ (𝜂 ∧ 0 ∈ ℕ0)))
3		oveq2 7166	. . . . . . . . 9 ⊢ (𝑘 = 0 → (𝑅↑𝑟𝑘) = (𝑅↑𝑟0))
4	3	breqd 5079	. . . . . . . 8 ⊢ (𝑘 = 0 → (𝑆(𝑅↑𝑟𝑘)𝑥 ↔ 𝑆(𝑅↑𝑟0)𝑥))
5	4	imbi1d 344	. . . . . . 7 ⊢ (𝑘 = 0 → ((𝑆(𝑅↑𝑟𝑘)𝑥 → 𝜓) ↔ (𝑆(𝑅↑𝑟0)𝑥 → 𝜓)))
6	5	albidv 1921	. . . . . 6 ⊢ (𝑘 = 0 → (∀𝑥(𝑆(𝑅↑𝑟𝑘)𝑥 → 𝜓) ↔ ∀𝑥(𝑆(𝑅↑𝑟0)𝑥 → 𝜓)))
7	2, 6	imbi12d 347	. . . . 5 ⊢ (𝑘 = 0 → (((𝜂 ∧ 𝑘 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑘)𝑥 → 𝜓)) ↔ ((𝜂 ∧ 0 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟0)𝑥 → 𝜓))))
8		eleq1 2902	. . . . . . 7 ⊢ (𝑘 = 𝑙 → (𝑘 ∈ ℕ0 ↔ 𝑙 ∈ ℕ0))
9	8	anbi2d 630	. . . . . 6 ⊢ (𝑘 = 𝑙 → ((𝜂 ∧ 𝑘 ∈ ℕ0) ↔ (𝜂 ∧ 𝑙 ∈ ℕ0)))
10		oveq2 7166	. . . . . . . . 9 ⊢ (𝑘 = 𝑙 → (𝑅↑𝑟𝑘) = (𝑅↑𝑟𝑙))
11	10	breqd 5079	. . . . . . . 8 ⊢ (𝑘 = 𝑙 → (𝑆(𝑅↑𝑟𝑘)𝑥 ↔ 𝑆(𝑅↑𝑟𝑙)𝑥))
12	11	imbi1d 344	. . . . . . 7 ⊢ (𝑘 = 𝑙 → ((𝑆(𝑅↑𝑟𝑘)𝑥 → 𝜓) ↔ (𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓)))
13	12	albidv 1921	. . . . . 6 ⊢ (𝑘 = 𝑙 → (∀𝑥(𝑆(𝑅↑𝑟𝑘)𝑥 → 𝜓) ↔ ∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓)))
14	9, 13	imbi12d 347	. . . . 5 ⊢ (𝑘 = 𝑙 → (((𝜂 ∧ 𝑘 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑘)𝑥 → 𝜓)) ↔ ((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓))))
15		eleq1 2902	. . . . . . 7 ⊢ (𝑘 = (𝑙 + 1) → (𝑘 ∈ ℕ0 ↔ (𝑙 + 1) ∈ ℕ0))
16	15	anbi2d 630	. . . . . 6 ⊢ (𝑘 = (𝑙 + 1) → ((𝜂 ∧ 𝑘 ∈ ℕ0) ↔ (𝜂 ∧ (𝑙 + 1) ∈ ℕ0)))
17		oveq2 7166	. . . . . . . . 9 ⊢ (𝑘 = (𝑙 + 1) → (𝑅↑𝑟𝑘) = (𝑅↑𝑟(𝑙 + 1)))
18	17	breqd 5079	. . . . . . . 8 ⊢ (𝑘 = (𝑙 + 1) → (𝑆(𝑅↑𝑟𝑘)𝑥 ↔ 𝑆(𝑅↑𝑟(𝑙 + 1))𝑥))
19	18	imbi1d 344	. . . . . . 7 ⊢ (𝑘 = (𝑙 + 1) → ((𝑆(𝑅↑𝑟𝑘)𝑥 → 𝜓) ↔ (𝑆(𝑅↑𝑟(𝑙 + 1))𝑥 → 𝜓)))
20	19	albidv 1921	. . . . . 6 ⊢ (𝑘 = (𝑙 + 1) → (∀𝑥(𝑆(𝑅↑𝑟𝑘)𝑥 → 𝜓) ↔ ∀𝑥(𝑆(𝑅↑𝑟(𝑙 + 1))𝑥 → 𝜓)))
21	16, 20	imbi12d 347	. . . . 5 ⊢ (𝑘 = (𝑙 + 1) → (((𝜂 ∧ 𝑘 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑘)𝑥 → 𝜓)) ↔ ((𝜂 ∧ (𝑙 + 1) ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟(𝑙 + 1))𝑥 → 𝜓))))
22		eleq1 2902	. . . . . . 7 ⊢ (𝑘 = 𝑛 → (𝑘 ∈ ℕ0 ↔ 𝑛 ∈ ℕ0))
23	22	anbi2d 630	. . . . . 6 ⊢ (𝑘 = 𝑛 → ((𝜂 ∧ 𝑘 ∈ ℕ0) ↔ (𝜂 ∧ 𝑛 ∈ ℕ0)))
24		oveq2 7166	. . . . . . . . 9 ⊢ (𝑘 = 𝑛 → (𝑅↑𝑟𝑘) = (𝑅↑𝑟𝑛))
25	24	breqd 5079	. . . . . . . 8 ⊢ (𝑘 = 𝑛 → (𝑆(𝑅↑𝑟𝑘)𝑥 ↔ 𝑆(𝑅↑𝑟𝑛)𝑥))
26	25	imbi1d 344	. . . . . . 7 ⊢ (𝑘 = 𝑛 → ((𝑆(𝑅↑𝑟𝑘)𝑥 → 𝜓) ↔ (𝑆(𝑅↑𝑟𝑛)𝑥 → 𝜓)))
27	26	albidv 1921	. . . . . 6 ⊢ (𝑘 = 𝑛 → (∀𝑥(𝑆(𝑅↑𝑟𝑘)𝑥 → 𝜓) ↔ ∀𝑥(𝑆(𝑅↑𝑟𝑛)𝑥 → 𝜓)))
28	23, 27	imbi12d 347	. . . . 5 ⊢ (𝑘 = 𝑛 → (((𝜂 ∧ 𝑘 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑘)𝑥 → 𝜓)) ↔ ((𝜂 ∧ 𝑛 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑛)𝑥 → 𝜓))))
29		relexpindlem.2	. . . . . . . . . 10 ⊢ (𝜂 → 𝑅 ∈ V)
30		relexpindlem.1	. . . . . . . . . 10 ⊢ (𝜂 → Rel 𝑅)
31	29, 30	jca 514	. . . . . . . . 9 ⊢ (𝜂 → (𝑅 ∈ V ∧ Rel 𝑅))
32	31	adantr 483	. . . . . . . 8 ⊢ ((𝜂 ∧ 0 ∈ ℕ0) → (𝑅 ∈ V ∧ Rel 𝑅))
33		relexp0 14384	. . . . . . . 8 ⊢ ((𝑅 ∈ V ∧ Rel 𝑅) → (𝑅↑𝑟0) = ( I ↾ ∪ ∪ 𝑅))
34	32, 33	syl 17	. . . . . . 7 ⊢ ((𝜂 ∧ 0 ∈ ℕ0) → (𝑅↑𝑟0) = ( I ↾ ∪ ∪ 𝑅))
35		relexpindlem.7	. . . . . . . . . 10 ⊢ (𝜂 → 𝜒)
36		simpl 485	. . . . . . . . . 10 ⊢ ((𝜂 ∧ 0 ∈ ℕ0) → 𝜂)
37		relexpindlem.3	. . . . . . . . . . . 12 ⊢ (𝜂 → 𝑆 ∈ V)
38	37	adantl 484	. . . . . . . . . . 11 ⊢ ((𝜒 ∧ 𝜂) → 𝑆 ∈ V)
39		simprl 769	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑖 = 𝑆 ∧ (𝜂 ∧ (𝜑 ∧ 𝑖 = 𝑆))) → 𝜂)
40	39, 35	jccil 525	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑖 = 𝑆 ∧ (𝜂 ∧ (𝜑 ∧ 𝑖 = 𝑆))) → (𝜒 ∧ 𝜂))
41	40	expcom 416	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜂 ∧ (𝜑 ∧ 𝑖 = 𝑆)) → (𝑖 = 𝑆 → (𝜒 ∧ 𝜂)))
42	41	expcom 416	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑖 = 𝑆) → (𝜂 → (𝑖 = 𝑆 → (𝜒 ∧ 𝜂))))
43	42	expcom 416	. . . . . . . . . . . . . . 15 ⊢ (𝑖 = 𝑆 → (𝜑 → (𝜂 → (𝑖 = 𝑆 → (𝜒 ∧ 𝜂)))))
44	43	3imp1 1343	. . . . . . . . . . . . . 14 ⊢ (((𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ∧ 𝑖 = 𝑆) → (𝜒 ∧ 𝜂))
45	44	expcom 416	. . . . . . . . . . . . 13 ⊢ (𝑖 = 𝑆 → ((𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) → (𝜒 ∧ 𝜂)))
46		simprr 771	. . . . . . . . . . . . . . . 16 ⊢ ((𝜒 ∧ (𝜂 ∧ 𝑖 = 𝑆)) → 𝑖 = 𝑆)
47		relexpindlem.4	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑖 = 𝑆 → (𝜑 ↔ 𝜒))
48	47	ad2antll 727	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜒 ∧ (𝜂 ∧ 𝑖 = 𝑆)) → (𝜑 ↔ 𝜒))
49	48	bicomd 225	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜒 ∧ (𝜂 ∧ 𝑖 = 𝑆)) → (𝜒 ↔ 𝜑))
50		anbi1 633	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜒 ↔ 𝜑) → ((𝜒 ∧ (𝜂 ∧ 𝑖 = 𝑆)) ↔ (𝜑 ∧ (𝜂 ∧ 𝑖 = 𝑆))))
51		simpl 485	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ (𝜂 ∧ 𝑖 = 𝑆)) → 𝜑)
52	50, 51	syl6bi 255	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜒 ↔ 𝜑) → ((𝜒 ∧ (𝜂 ∧ 𝑖 = 𝑆)) → 𝜑))
53	49, 52	mpcom 38	. . . . . . . . . . . . . . . 16 ⊢ ((𝜒 ∧ (𝜂 ∧ 𝑖 = 𝑆)) → 𝜑)
54		simprl 769	. . . . . . . . . . . . . . . 16 ⊢ ((𝜒 ∧ (𝜂 ∧ 𝑖 = 𝑆)) → 𝜂)
55	46, 53, 54	3jca 1124	. . . . . . . . . . . . . . 15 ⊢ ((𝜒 ∧ (𝜂 ∧ 𝑖 = 𝑆)) → (𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂))
56	55	anassrs 470	. . . . . . . . . . . . . 14 ⊢ (((𝜒 ∧ 𝜂) ∧ 𝑖 = 𝑆) → (𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂))
57	56	expcom 416	. . . . . . . . . . . . 13 ⊢ (𝑖 = 𝑆 → ((𝜒 ∧ 𝜂) → (𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂)))
58	45, 57	impbid 214	. . . . . . . . . . . 12 ⊢ (𝑖 = 𝑆 → ((𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ↔ (𝜒 ∧ 𝜂)))
59	58	spcegv 3599	. . . . . . . . . . 11 ⊢ (𝑆 ∈ V → ((𝜒 ∧ 𝜂) → ∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂)))
60	38, 59	mpcom 38	. . . . . . . . . 10 ⊢ ((𝜒 ∧ 𝜂) → ∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂))
61	35, 36, 60	syl2an2r 683	. . . . . . . . 9 ⊢ ((𝜂 ∧ 0 ∈ ℕ0) → ∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂))
62		simpl 485	. . . . . . . . . . . . . 14 ⊢ ((𝑆( I ↾ ∪ ∪ 𝑅)𝑥 ∧ (∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0))) → 𝑆( I ↾ ∪ ∪ 𝑅)𝑥)
63		df-br 5069	. . . . . . . . . . . . . 14 ⊢ (𝑆( I ↾ ∪ ∪ 𝑅)𝑥 ↔ ⟨𝑆, 𝑥⟩ ∈ ( I ↾ ∪ ∪ 𝑅))
64	62, 63	sylib 220	. . . . . . . . . . . . 13 ⊢ ((𝑆( I ↾ ∪ ∪ 𝑅)𝑥 ∧ (∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0))) → ⟨𝑆, 𝑥⟩ ∈ ( I ↾ ∪ ∪ 𝑅))
65		vex 3499	. . . . . . . . . . . . . 14 ⊢ 𝑥 ∈ V
66	65	opelresi 5863	. . . . . . . . . . . . 13 ⊢ (⟨𝑆, 𝑥⟩ ∈ ( I ↾ ∪ ∪ 𝑅) ↔ (𝑆 ∈ ∪ ∪ 𝑅 ∧ ⟨𝑆, 𝑥⟩ ∈ I ))
67	64, 66	sylib 220	. . . . . . . . . . . 12 ⊢ ((𝑆( I ↾ ∪ ∪ 𝑅)𝑥 ∧ (∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0))) → (𝑆 ∈ ∪ ∪ 𝑅 ∧ ⟨𝑆, 𝑥⟩ ∈ I ))
68		simplr 767	. . . . . . . . . . . . . 14 ⊢ (((𝑆 ∈ ∪ ∪ 𝑅 ∧ ⟨𝑆, 𝑥⟩ ∈ I ) ∧ (𝑆( I ↾ ∪ ∪ 𝑅)𝑥 ∧ (∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0)))) → ⟨𝑆, 𝑥⟩ ∈ I )
69		df-br 5069	. . . . . . . . . . . . . 14 ⊢ (𝑆 I 𝑥 ↔ ⟨𝑆, 𝑥⟩ ∈ I )
70	68, 69	sylibr 236	. . . . . . . . . . . . 13 ⊢ (((𝑆 ∈ ∪ ∪ 𝑅 ∧ ⟨𝑆, 𝑥⟩ ∈ I ) ∧ (𝑆( I ↾ ∪ ∪ 𝑅)𝑥 ∧ (∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0)))) → 𝑆 I 𝑥)
71	65	ideq 5725	. . . . . . . . . . . . 13 ⊢ (𝑆 I 𝑥 ↔ 𝑆 = 𝑥)
72	70, 71	sylib 220	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ ∪ ∪ 𝑅 ∧ ⟨𝑆, 𝑥⟩ ∈ I ) ∧ (𝑆( I ↾ ∪ ∪ 𝑅)𝑥 ∧ (∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0)))) → 𝑆 = 𝑥)
73	67, 72	mpancom 686	. . . . . . . . . . 11 ⊢ ((𝑆( I ↾ ∪ ∪ 𝑅)𝑥 ∧ (∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0))) → 𝑆 = 𝑥)
74		breq1 5071	. . . . . . . . . . . . 13 ⊢ (𝑆 = 𝑥 → (𝑆( I ↾ ∪ ∪ 𝑅)𝑥 ↔ 𝑥( I ↾ ∪ ∪ 𝑅)𝑥))
75		eqeq2 2835	. . . . . . . . . . . . . . . 16 ⊢ (𝑆 = 𝑥 → (𝑖 = 𝑆 ↔ 𝑖 = 𝑥))
76	75	3anbi1d 1436	. . . . . . . . . . . . . . 15 ⊢ (𝑆 = 𝑥 → ((𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ↔ (𝑖 = 𝑥 ∧ 𝜑 ∧ 𝜂)))
77	76	exbidv 1922	. . . . . . . . . . . . . 14 ⊢ (𝑆 = 𝑥 → (∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ↔ ∃𝑖(𝑖 = 𝑥 ∧ 𝜑 ∧ 𝜂)))
78	77	anbi1d 631	. . . . . . . . . . . . 13 ⊢ (𝑆 = 𝑥 → ((∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0)) ↔ (∃𝑖(𝑖 = 𝑥 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0))))
79	74, 78	anbi12d 632	. . . . . . . . . . . 12 ⊢ (𝑆 = 𝑥 → ((𝑆( I ↾ ∪ ∪ 𝑅)𝑥 ∧ (∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0))) ↔ (𝑥( I ↾ ∪ ∪ 𝑅)𝑥 ∧ (∃𝑖(𝑖 = 𝑥 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0)))))
80		simprl 769	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜂 ∧ (𝜑 ∧ 𝑖 = 𝑥)) → 𝜑)
81		relexpindlem.5	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑖 = 𝑥 → (𝜑 ↔ 𝜓))
82	81	ad2antll 727	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜂 ∧ (𝜑 ∧ 𝑖 = 𝑥)) → (𝜑 ↔ 𝜓))
83	80, 82	mpbid 234	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜂 ∧ (𝜑 ∧ 𝑖 = 𝑥)) → 𝜓)
84	83	expcom 416	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑖 = 𝑥) → (𝜂 → 𝜓))
85	84	expcom 416	. . . . . . . . . . . . . . 15 ⊢ (𝑖 = 𝑥 → (𝜑 → (𝜂 → 𝜓)))
86	85	3imp 1107	. . . . . . . . . . . . . 14 ⊢ ((𝑖 = 𝑥 ∧ 𝜑 ∧ 𝜂) → 𝜓)
87	86	exlimiv 1931	. . . . . . . . . . . . 13 ⊢ (∃𝑖(𝑖 = 𝑥 ∧ 𝜑 ∧ 𝜂) → 𝜓)
88	87	ad2antrl 726	. . . . . . . . . . . 12 ⊢ ((𝑥( I ↾ ∪ ∪ 𝑅)𝑥 ∧ (∃𝑖(𝑖 = 𝑥 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0))) → 𝜓)
89	79, 88	syl6bi 255	. . . . . . . . . . 11 ⊢ (𝑆 = 𝑥 → ((𝑆( I ↾ ∪ ∪ 𝑅)𝑥 ∧ (∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0))) → 𝜓))
90	73, 89	mpcom 38	. . . . . . . . . 10 ⊢ ((𝑆( I ↾ ∪ ∪ 𝑅)𝑥 ∧ (∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0))) → 𝜓)
91	90	expcom 416	. . . . . . . . 9 ⊢ ((∃𝑖(𝑖 = 𝑆 ∧ 𝜑 ∧ 𝜂) ∧ (𝜂 ∧ 0 ∈ ℕ0)) → (𝑆( I ↾ ∪ ∪ 𝑅)𝑥 → 𝜓))
92	61, 91	mpancom 686	. . . . . . . 8 ⊢ ((𝜂 ∧ 0 ∈ ℕ0) → (𝑆( I ↾ ∪ ∪ 𝑅)𝑥 → 𝜓))
93		breq 5070	. . . . . . . . 9 ⊢ ((𝑅↑𝑟0) = ( I ↾ ∪ ∪ 𝑅) → (𝑆(𝑅↑𝑟0)𝑥 ↔ 𝑆( I ↾ ∪ ∪ 𝑅)𝑥))
94	93	imbi1d 344	. . . . . . . 8 ⊢ ((𝑅↑𝑟0) = ( I ↾ ∪ ∪ 𝑅) → ((𝑆(𝑅↑𝑟0)𝑥 → 𝜓) ↔ (𝑆( I ↾ ∪ ∪ 𝑅)𝑥 → 𝜓)))
95	92, 94	syl5ibr 248	. . . . . . 7 ⊢ ((𝑅↑𝑟0) = ( I ↾ ∪ ∪ 𝑅) → ((𝜂 ∧ 0 ∈ ℕ0) → (𝑆(𝑅↑𝑟0)𝑥 → 𝜓)))
96	34, 95	mpcom 38	. . . . . 6 ⊢ ((𝜂 ∧ 0 ∈ ℕ0) → (𝑆(𝑅↑𝑟0)𝑥 → 𝜓))
97	96	alrimiv 1928	. . . . 5 ⊢ ((𝜂 ∧ 0 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟0)𝑥 → 𝜓))
98		breq2 5072	. . . . . . . . . . . 12 ⊢ (𝑖 = 𝑥 → (𝑆(𝑅↑𝑟𝑙)𝑖 ↔ 𝑆(𝑅↑𝑟𝑙)𝑥))
99	98, 81	imbi12d 347	. . . . . . . . . . 11 ⊢ (𝑖 = 𝑥 → ((𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ↔ (𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓)))
100	99	cbvalvw 2043	. . . . . . . . . 10 ⊢ (∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ↔ ∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓))
101	100	bicomi 226	. . . . . . . . 9 ⊢ (∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓) ↔ ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑))
102		imbi2 351	. . . . . . . . . . . . 13 ⊢ ((∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓) ↔ ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) → (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓)) ↔ ((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑))))
103	102	anbi1d 631	. . . . . . . . . . . 12 ⊢ ((∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓) ↔ ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) → ((((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓)) ∧ 𝑙 ∈ ℕ0) ↔ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0)))
104	103	anbi2d 630	. . . . . . . . . . 11 ⊢ ((∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓) ↔ ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) → (((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓)) ∧ 𝑙 ∈ ℕ0)) ↔ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0))))
105	104	anbi2d 630	. . . . . . . . . 10 ⊢ ((∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓) ↔ ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) → ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓)) ∧ 𝑙 ∈ ℕ0))) ↔ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0)))))
106	29	adantr 483	. . . . . . . . . . . . 13 ⊢ ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0))) → 𝑅 ∈ V)
107	30	adantr 483	. . . . . . . . . . . . 13 ⊢ ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0))) → Rel 𝑅)
108		simprrr 780	. . . . . . . . . . . . 13 ⊢ ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0))) → 𝑙 ∈ ℕ0)
109		relexpsucl 14394	. . . . . . . . . . . . 13 ⊢ ((𝑅 ∈ V ∧ Rel 𝑅 ∧ 𝑙 ∈ ℕ0) → (𝑅↑𝑟(𝑙 + 1)) = (𝑅 ∘ (𝑅↑𝑟𝑙)))
110	106, 107, 108, 109	syl3anc 1367	. . . . . . . . . . . 12 ⊢ ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0))) → (𝑅↑𝑟(𝑙 + 1)) = (𝑅 ∘ (𝑅↑𝑟𝑙)))
111		simpl 485	. . . . . . . . . . . . . . . 16 ⊢ ((𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0)))) → 𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥)
112	37	ad2antrl 726	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0)))) → 𝑆 ∈ V)
113		brcog 5739	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑆 ∈ V ∧ 𝑥 ∈ V) → (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ↔ ∃𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))
114	112, 65, 113	sylancl 588	. . . . . . . . . . . . . . . 16 ⊢ ((𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0)))) → (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ↔ ∃𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))
115	111, 114	mpbid 234	. . . . . . . . . . . . . . 15 ⊢ ((𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0)))) → ∃𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))
116		simprl 769	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))))) → 𝜂)
117		simprrl 779	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))) → 𝑙 ∈ ℕ0)
118	117	ad2antll 727	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))))) → 𝑙 ∈ ℕ0)
119		simprl 769	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))) → ((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)))
120	119	ad2antll 727	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))))) → ((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)))
121	116, 118, 120	mp2and 697	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))))) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑))
122		simprrl 779	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ∧ (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))))) → 𝜂)
123		simprrr 780	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ ((((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))) → 𝑗𝑅𝑥)
124	123	ad2antll 727	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))) → 𝑗𝑅𝑥)
125	124	ad2antll 727	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ∧ (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))))) → 𝑗𝑅𝑥)
126		breq2 5072	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ⊢ (𝑖 = 𝑗 → (𝑆(𝑅↑𝑟𝑙)𝑖 ↔ 𝑆(𝑅↑𝑟𝑙)𝑗))
127		relexpindlem.6	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ⊢ (𝑖 = 𝑗 → (𝜑 ↔ 𝜃))
128	126, 127	imbi12d 347	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ (𝑖 = 𝑗 → ((𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ↔ (𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)))
129	128	cbvalvw 2043	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ↔ ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃))
130		id 22	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ⊢ ((∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ↔ ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) → (∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ↔ ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)))
131		imbi2 351	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ⊢ ((∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ↔ ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) → (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ↔ ((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃))))
132	131	anbi1d 631	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ⊢ ((∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ↔ ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) → ((((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))) ↔ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))))
133	132	anbi2d 630	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ⊢ ((∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ↔ ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) → (((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))) ↔ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))))
134	133	anbi2d 630	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 ⊢ ((∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ↔ ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) → ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))) ↔ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))))))
135	134	anbi2d 630	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ⊢ ((∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ↔ ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) → ((𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))))) ↔ (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))))))
136	130, 135	anbi12d 632	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ ((∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ↔ ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) → ((∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ∧ (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))))) ↔ (∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃) ∧ (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))))))))
137		simprrl 779	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ⊢ ((((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))) → 𝑆(𝑅↑𝑟𝑙)𝑗)
138	137	ad2antll 727	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 ⊢ ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))) → 𝑆(𝑅↑𝑟𝑙)𝑗)
139	138	ad2antll 727	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ⊢ ((∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃) ∧ (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))))) → 𝑆(𝑅↑𝑟𝑙)𝑗)
140		sp 2182	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 ⊢ (∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃) → (𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃))
141	140	adantr 483	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ⊢ ((∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃) ∧ (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))))) → (𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃))
142	139, 141	mpd 15	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ ((∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃) ∧ (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))))) → 𝜃)
143	136, 142	syl6bi 255	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ ((∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ↔ ∀𝑗(𝑆(𝑅↑𝑟𝑙)𝑗 → 𝜃)) → ((∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ∧ (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))))) → 𝜃))
144	129, 143	ax-mp 5	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ∧ (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))))) → 𝜃)
145		relexpindlem.8	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (𝜂 → (𝑗𝑅𝑥 → (𝜃 → 𝜓)))
146	122, 125, 144, 145	syl3c 66	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑) ∧ (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))))) → 𝜓)
147	121, 146	mpancom 686	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))))) → 𝜓)
148	147	expcom 416	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))))) → (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 → 𝜓))
149	148	expcom 416	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)))) → (𝜂 → (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 → 𝜓)))
150	149	expcom 416	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ (𝑙 ∈ ℕ0 ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))) → ((𝑙 + 1) ∈ ℕ0 → (𝜂 → (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 → 𝜓))))
151	150	anassrs 470	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0) ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)) → ((𝑙 + 1) ∈ ℕ0 → (𝜂 → (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 → 𝜓))))
152	151	impcom 410	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝑙 + 1) ∈ ℕ0 ∧ ((((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0) ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))) → (𝜂 → (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 → 𝜓)))
153	152	anassrs 470	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0)) ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)) → (𝜂 → (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 → 𝜓)))
154	153	impcom 410	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜂 ∧ (((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0)) ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))) → (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 → 𝜓))
155	154	anassrs 470	. . . . . . . . . . . . . . . . 17 ⊢ (((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0))) ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)) → (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 → 𝜓))
156	155	impcom 410	. . . . . . . . . . . . . . . 16 ⊢ ((𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0))) ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥))) → 𝜓)
157	156	anassrs 470	. . . . . . . . . . . . . . 15 ⊢ (((𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0)))) ∧ (𝑆(𝑅↑𝑟𝑙)𝑗 ∧ 𝑗𝑅𝑥)) → 𝜓)
158	115, 157	exlimddv 1936	. . . . . . . . . . . . . 14 ⊢ ((𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 ∧ (𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0)))) → 𝜓)
159	158	expcom 416	. . . . . . . . . . . . 13 ⊢ ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0))) → (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 → 𝜓))
160		breq 5070	. . . . . . . . . . . . . 14 ⊢ ((𝑅↑𝑟(𝑙 + 1)) = (𝑅 ∘ (𝑅↑𝑟𝑙)) → (𝑆(𝑅↑𝑟(𝑙 + 1))𝑥 ↔ 𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥))
161	160	imbi1d 344	. . . . . . . . . . . . 13 ⊢ ((𝑅↑𝑟(𝑙 + 1)) = (𝑅 ∘ (𝑅↑𝑟𝑙)) → ((𝑆(𝑅↑𝑟(𝑙 + 1))𝑥 → 𝜓) ↔ (𝑆(𝑅 ∘ (𝑅↑𝑟𝑙))𝑥 → 𝜓)))
162	159, 161	syl5ibr 248	. . . . . . . . . . . 12 ⊢ ((𝑅↑𝑟(𝑙 + 1)) = (𝑅 ∘ (𝑅↑𝑟𝑙)) → ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0))) → (𝑆(𝑅↑𝑟(𝑙 + 1))𝑥 → 𝜓)))
163	110, 162	mpcom 38	. . . . . . . . . . 11 ⊢ ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0))) → (𝑆(𝑅↑𝑟(𝑙 + 1))𝑥 → 𝜓))
164	163	alrimiv 1928	. . . . . . . . . 10 ⊢ ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) ∧ 𝑙 ∈ ℕ0))) → ∀𝑥(𝑆(𝑅↑𝑟(𝑙 + 1))𝑥 → 𝜓))
165	105, 164	syl6bi 255	. . . . . . . . 9 ⊢ ((∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓) ↔ ∀𝑖(𝑆(𝑅↑𝑟𝑙)𝑖 → 𝜑)) → ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓)) ∧ 𝑙 ∈ ℕ0))) → ∀𝑥(𝑆(𝑅↑𝑟(𝑙 + 1))𝑥 → 𝜓)))
166	101, 165	ax-mp 5	. . . . . . . 8 ⊢ ((𝜂 ∧ ((𝑙 + 1) ∈ ℕ0 ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓)) ∧ 𝑙 ∈ ℕ0))) → ∀𝑥(𝑆(𝑅↑𝑟(𝑙 + 1))𝑥 → 𝜓))
167	166	anassrs 470	. . . . . . 7 ⊢ (((𝜂 ∧ (𝑙 + 1) ∈ ℕ0) ∧ (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓)) ∧ 𝑙 ∈ ℕ0)) → ∀𝑥(𝑆(𝑅↑𝑟(𝑙 + 1))𝑥 → 𝜓))
168	167	expcom 416	. . . . . 6 ⊢ ((((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓)) ∧ 𝑙 ∈ ℕ0) → ((𝜂 ∧ (𝑙 + 1) ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟(𝑙 + 1))𝑥 → 𝜓)))
169	168	expcom 416	. . . . 5 ⊢ (𝑙 ∈ ℕ0 → (((𝜂 ∧ 𝑙 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑙)𝑥 → 𝜓)) → ((𝜂 ∧ (𝑙 + 1) ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟(𝑙 + 1))𝑥 → 𝜓))))
170	7, 14, 21, 28, 97, 169	nn0ind 12080	. . . 4 ⊢ (𝑛 ∈ ℕ0 → ((𝜂 ∧ 𝑛 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑛)𝑥 → 𝜓)))
171	170	anabsi7 669	. . 3 ⊢ ((𝜂 ∧ 𝑛 ∈ ℕ0) → ∀𝑥(𝑆(𝑅↑𝑟𝑛)𝑥 → 𝜓))
172	171	19.21bi 2188	. 2 ⊢ ((𝜂 ∧ 𝑛 ∈ ℕ0) → (𝑆(𝑅↑𝑟𝑛)𝑥 → 𝜓))
173	172	ex 415	1 ⊢ (𝜂 → (𝑛 ∈ ℕ0 → (𝑆(𝑅↑𝑟𝑛)𝑥 → 𝜓)))

Syntax hints:   → wi 4   ↔ wb 208   ∧ wa 398   ∧ w3a 1083  ∀wal 1535   = wceq 1537  ∃wex 1780   ∈ wcel 2114  Vcvv 3496  ⟨cop 4575  ∪ cuni 4840   class class class wbr 5068   I cid 5461   ↾ cres 5559   ∘ ccom 5561  Rel wrel 5562  (class class class)co 7158  0cc0 10539  1c1 10540   + caddc 10542  ℕ₀cn0 11900  ↑_𝑟crelexp 14381

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-sep 5205  ax-nul 5212  ax-pow 5268  ax-pr 5332  ax-un 7463  ax-cnex 10595  ax-resscn 10596  ax-1cn 10597  ax-icn 10598  ax-addcl 10599  ax-addrcl 10600  ax-mulcl 10601  ax-mulrcl 10602  ax-mulcom 10603  ax-addass 10604  ax-mulass 10605  ax-distr 10606  ax-i2m1 10607  ax-1ne0 10608  ax-1rid 10609  ax-rnegex 10610  ax-rrecex 10611  ax-cnre 10612  ax-pre-lttri 10613  ax-pre-lttrn 10614  ax-pre-ltadd 10615  ax-pre-mulgt0 10616

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ne 3019  df-nel 3126  df-ral 3145  df-rex 3146  df-reu 3147  df-rab 3149  df-v 3498  df-sbc 3775  df-csb 3886  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-pss 3956  df-nul 4294  df-if 4470  df-pw 4543  df-sn 4570  df-pr 4572  df-tp 4574  df-op 4576  df-uni 4841  df-iun 4923  df-br 5069  df-opab 5131  df-mpt 5149  df-tr 5175  df-id 5462  df-eprel 5467  df-po 5476  df-so 5477  df-fr 5516  df-we 5518  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-rn 5568  df-res 5569  df-ima 5570  df-pred 6150  df-ord 6196  df-on 6197  df-lim 6198  df-suc 6199  df-iota 6316  df-fun 6359  df-fn 6360  df-f 6361  df-f1 6362  df-fo 6363  df-f1o 6364  df-fv 6365  df-riota 7116  df-ov 7161  df-oprab 7162  df-mpo 7163  df-om 7583  df-2nd 7692  df-wrecs 7949  df-recs 8010  df-rdg 8048  df-er 8291  df-en 8512  df-dom 8513  df-sdom 8514  df-pnf 10679  df-mnf 10680  df-xr 10681  df-ltxr 10682  df-le 10683  df-sub 10874  df-neg 10875  df-nn 11641  df-n0 11901  df-z 11985  df-uz 12247  df-seq 13373  df-relexp 14382

This theorem is referenced by:  relexpind  14425