iunrelexp0 - Mathbox for Richard Penner

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Theorem iunrelexp0 42438

Description: Simplification of zeroth power of indexed union of powers of relations. (Contributed by RP, 19-Jun-2020.)

**Assertion**
Ref	Expression
iunrelexp0	⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀ ∧ ({0, 1} ∩ 𝑍) ≠ ∅) → (∪ 𝑥 ∈ 𝑍 (𝑅↑_𝑟𝑥)↑_𝑟0) = (𝑅↑_𝑟0))

Distinct variable groups: 𝑥,𝑅 𝑥,𝑉 𝑥,𝑍

**Proof of Theorem iunrelexp0**
Step	Hyp	Ref	Expression
1		df-pr 4630	. . . . . . 7 ⊢ {0, 1} = ({0} ∪ {1})
2	1	ineq1i 4207	. . . . . 6 ⊢ ({0, 1} ∩ 𝑍) = (({0} ∪ {1}) ∩ 𝑍)
3		indir 4274	. . . . . 6 ⊢ (({0} ∪ {1}) ∩ 𝑍) = (({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍))
4	2, 3	eqtr2i 2761	. . . . 5 ⊢ (({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) = ({0, 1} ∩ 𝑍)
5	4	uneq1i 4158	. . . 4 ⊢ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍) = (({0, 1} ∩ 𝑍) ∪ 𝑍)
6		inss2 4228	. . . . 5 ⊢ ({0, 1} ∩ 𝑍) ⊆ 𝑍
7		ssequn1 4179	. . . . 5 ⊢ (({0, 1} ∩ 𝑍) ⊆ 𝑍 ↔ (({0, 1} ∩ 𝑍) ∪ 𝑍) = 𝑍)
8	6, 7	mpbi 229	. . . 4 ⊢ (({0, 1} ∩ 𝑍) ∪ 𝑍) = 𝑍
9	5, 8	eqtr2i 2761	. . 3 ⊢ 𝑍 = ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)
10		iuneq1 5012	. . . 4 ⊢ (𝑍 = ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍) → ∪ 𝑥 ∈ 𝑍 (𝑅↑_𝑟𝑥) = ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥))
11	10	oveq1d 7420	. . 3 ⊢ (𝑍 = ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍) → (∪ 𝑥 ∈ 𝑍 (𝑅↑_𝑟𝑥)↑_𝑟0) = (∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥)↑_𝑟0))
12	9, 11	ax-mp 5	. 2 ⊢ (∪ 𝑥 ∈ 𝑍 (𝑅↑_𝑟𝑥)↑_𝑟0) = (∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥)↑_𝑟0)
13		dmiun 5911	. . . . . . 7 ⊢ dom ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) = ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)dom (𝑅↑_𝑟𝑥)
14		iunxun 5096	. . . . . . 7 ⊢ ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)dom (𝑅↑_𝑟𝑥) = (∪ 𝑥 ∈ (({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍))dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥))
15		iunxun 5096	. . . . . . . . . 10 ⊢ ∪ 𝑥 ∈ (({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍))dom (𝑅↑_𝑟𝑥) = (∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥))
16	15	equncomi 4154	. . . . . . . . 9 ⊢ ∪ 𝑥 ∈ (({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍))dom (𝑅↑_𝑟𝑥) = (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥))
17	16	uneq1i 4158	. . . . . . . 8 ⊢ (∪ 𝑥 ∈ (({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍))dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥)) = ((∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥)) ∪ ∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥))
18	17	equncomi 4154	. . . . . . 7 ⊢ (∪ 𝑥 ∈ (({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍))dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥)) = (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥)))
19	13, 14, 18	3eqtri 2764	. . . . . 6 ⊢ dom ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) = (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥)))
20		rniun 6144	. . . . . . 7 ⊢ ran ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) = ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)ran (𝑅↑_𝑟𝑥)
21		iunxun 5096	. . . . . . 7 ⊢ ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)ran (𝑅↑_𝑟𝑥) = (∪ 𝑥 ∈ (({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍))ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥))
22		iunxun 5096	. . . . . . . 8 ⊢ ∪ 𝑥 ∈ (({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍))ran (𝑅↑_𝑟𝑥) = (∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))
23	22	uneq1i 4158	. . . . . . 7 ⊢ (∪ 𝑥 ∈ (({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍))ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥)) = ((∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥))
24	20, 21, 23	3eqtri 2764	. . . . . 6 ⊢ ran ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) = ((∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥))
25	19, 24	uneq12i 4160	. . . . 5 ⊢ (dom ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) ∪ ran ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥)) = ((∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥))) ∪ ((∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥)))
26		uncom 4152	. . . . . . 7 ⊢ (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥))) = ((∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥)) ∪ ∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥))
27	26	uneq1i 4158	. . . . . 6 ⊢ ((∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥))) ∪ ((∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥))) = (((∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥)) ∪ ∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥)) ∪ ((∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥)))
28		un4 4168	. . . . . 6 ⊢ (((∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥)) ∪ ∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥)) ∪ ((∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥))) = (((∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) ∪ (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥)))
29	27, 28	eqtri 2760	. . . . 5 ⊢ ((∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥))) ∪ ((∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥))) = (((∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) ∪ (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥)))
30		uncom 4152	. . . . . . . 8 ⊢ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥)) = (∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥))
31	30	uneq1i 4158	. . . . . . 7 ⊢ ((∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)))
32		un4 4168	. . . . . . 7 ⊢ ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)))
33	31, 32	eqtri 2760	. . . . . 6 ⊢ ((∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)))
34	33	uneq1i 4158	. . . . 5 ⊢ (((∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) ∪ (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥))) = (((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) ∪ (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥)))
35	25, 29, 34	3eqtri 2764	. . . 4 ⊢ (dom ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) ∪ ran ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥)) = (((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) ∪ (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥)))
36		df-ne 2941	. . . . . . . . . 10 ⊢ (({0, 1} ∩ 𝑍) ≠ ∅ ↔ ¬ ({0, 1} ∩ 𝑍) = ∅)
37		incom 4200	. . . . . . . . . . . . . . 15 ⊢ ({0, 1} ∩ 𝑍) = (𝑍 ∩ {0, 1})
38	1	ineq2i 4208	. . . . . . . . . . . . . . 15 ⊢ (𝑍 ∩ {0, 1}) = (𝑍 ∩ ({0} ∪ {1}))
39		indi 4272	. . . . . . . . . . . . . . 15 ⊢ (𝑍 ∩ ({0} ∪ {1})) = ((𝑍 ∩ {0}) ∪ (𝑍 ∩ {1}))
40	37, 38, 39	3eqtri 2764	. . . . . . . . . . . . . 14 ⊢ ({0, 1} ∩ 𝑍) = ((𝑍 ∩ {0}) ∪ (𝑍 ∩ {1}))
41	40	eqeq1i 2737	. . . . . . . . . . . . 13 ⊢ (({0, 1} ∩ 𝑍) = ∅ ↔ ((𝑍 ∩ {0}) ∪ (𝑍 ∩ {1})) = ∅)
42		un00 4441	. . . . . . . . . . . . 13 ⊢ (((𝑍 ∩ {0}) = ∅ ∧ (𝑍 ∩ {1}) = ∅) ↔ ((𝑍 ∩ {0}) ∪ (𝑍 ∩ {1})) = ∅)
43		anor 981	. . . . . . . . . . . . 13 ⊢ (((𝑍 ∩ {0}) = ∅ ∧ (𝑍 ∩ {1}) = ∅) ↔ ¬ (¬ (𝑍 ∩ {0}) = ∅ ∨ ¬ (𝑍 ∩ {1}) = ∅))
44	41, 42, 43	3bitr2i 298	. . . . . . . . . . . 12 ⊢ (({0, 1} ∩ 𝑍) = ∅ ↔ ¬ (¬ (𝑍 ∩ {0}) = ∅ ∨ ¬ (𝑍 ∩ {1}) = ∅))
45	44	notbii 319	. . . . . . . . . . 11 ⊢ (¬ ({0, 1} ∩ 𝑍) = ∅ ↔ ¬ ¬ (¬ (𝑍 ∩ {0}) = ∅ ∨ ¬ (𝑍 ∩ {1}) = ∅))
46		notnotb 314	. . . . . . . . . . 11 ⊢ ((¬ (𝑍 ∩ {0}) = ∅ ∨ ¬ (𝑍 ∩ {1}) = ∅) ↔ ¬ ¬ (¬ (𝑍 ∩ {0}) = ∅ ∨ ¬ (𝑍 ∩ {1}) = ∅))
47		disjsn 4714	. . . . . . . . . . . . . 14 ⊢ ((𝑍 ∩ {0}) = ∅ ↔ ¬ 0 ∈ 𝑍)
48	47	notbii 319	. . . . . . . . . . . . 13 ⊢ (¬ (𝑍 ∩ {0}) = ∅ ↔ ¬ ¬ 0 ∈ 𝑍)
49		notnotb 314	. . . . . . . . . . . . 13 ⊢ (0 ∈ 𝑍 ↔ ¬ ¬ 0 ∈ 𝑍)
50	48, 49	bitr4i 277	. . . . . . . . . . . 12 ⊢ (¬ (𝑍 ∩ {0}) = ∅ ↔ 0 ∈ 𝑍)
51		disjsn 4714	. . . . . . . . . . . . . 14 ⊢ ((𝑍 ∩ {1}) = ∅ ↔ ¬ 1 ∈ 𝑍)
52	51	notbii 319	. . . . . . . . . . . . 13 ⊢ (¬ (𝑍 ∩ {1}) = ∅ ↔ ¬ ¬ 1 ∈ 𝑍)
53		notnotb 314	. . . . . . . . . . . . 13 ⊢ (1 ∈ 𝑍 ↔ ¬ ¬ 1 ∈ 𝑍)
54	52, 53	bitr4i 277	. . . . . . . . . . . 12 ⊢ (¬ (𝑍 ∩ {1}) = ∅ ↔ 1 ∈ 𝑍)
55	50, 54	orbi12i 913	. . . . . . . . . . 11 ⊢ ((¬ (𝑍 ∩ {0}) = ∅ ∨ ¬ (𝑍 ∩ {1}) = ∅) ↔ (0 ∈ 𝑍 ∨ 1 ∈ 𝑍))
56	45, 46, 55	3bitr2i 298	. . . . . . . . . 10 ⊢ (¬ ({0, 1} ∩ 𝑍) = ∅ ↔ (0 ∈ 𝑍 ∨ 1 ∈ 𝑍))
57	36, 56	sylbb 218	. . . . . . . . 9 ⊢ (({0, 1} ∩ 𝑍) ≠ ∅ → (0 ∈ 𝑍 ∨ 1 ∈ 𝑍))
58		simpl 483	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → 0 ∈ 𝑍)
59	58	snssd 4811	. . . . . . . . . . . . . . . . . . 19 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → {0} ⊆ 𝑍)
60		df-ss 3964	. . . . . . . . . . . . . . . . . . 19 ⊢ ({0} ⊆ 𝑍 ↔ ({0} ∩ 𝑍) = {0})
61	59, 60	sylib 217	. . . . . . . . . . . . . . . . . 18 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ({0} ∩ 𝑍) = {0})
62	61	iuneq1d 5023	. . . . . . . . . . . . . . . . 17 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) = ∪ 𝑥 ∈ {0}dom (𝑅↑_𝑟𝑥))
63		c0ex 11204	. . . . . . . . . . . . . . . . . 18 ⊢ 0 ∈ V
64		oveq2 7413	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥 = 0 → (𝑅↑_𝑟𝑥) = (𝑅↑_𝑟0))
65	64	dmeqd 5903	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 = 0 → dom (𝑅↑_𝑟𝑥) = dom (𝑅↑_𝑟0))
66	63, 65	iunxsn 5093	. . . . . . . . . . . . . . . . 17 ⊢ ∪ 𝑥 ∈ {0}dom (𝑅↑_𝑟𝑥) = dom (𝑅↑_𝑟0)
67	62, 66	eqtrdi 2788	. . . . . . . . . . . . . . . 16 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) = dom (𝑅↑_𝑟0))
68		relexp0g 14965	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑅 ∈ 𝑉 → (𝑅↑_𝑟0) = ( I ↾ (dom 𝑅 ∪ ran 𝑅)))
69	68	ad2antll 727	. . . . . . . . . . . . . . . . . 18 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → (𝑅↑_𝑟0) = ( I ↾ (dom 𝑅 ∪ ran 𝑅)))
70	69	dmeqd 5903	. . . . . . . . . . . . . . . . 17 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → dom (𝑅↑_𝑟0) = dom ( I ↾ (dom 𝑅 ∪ ran 𝑅)))
71		dmresi 6049	. . . . . . . . . . . . . . . . 17 ⊢ dom ( I ↾ (dom 𝑅 ∪ ran 𝑅)) = (dom 𝑅 ∪ ran 𝑅)
72	70, 71	eqtrdi 2788	. . . . . . . . . . . . . . . 16 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → dom (𝑅↑_𝑟0) = (dom 𝑅 ∪ ran 𝑅))
73	67, 72	eqtrd 2772	. . . . . . . . . . . . . . 15 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) = (dom 𝑅 ∪ ran 𝑅))
74	61	iuneq1d 5023	. . . . . . . . . . . . . . . . 17 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) = ∪ 𝑥 ∈ {0}ran (𝑅↑_𝑟𝑥))
75	64	rneqd 5935	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 = 0 → ran (𝑅↑_𝑟𝑥) = ran (𝑅↑_𝑟0))
76	63, 75	iunxsn 5093	. . . . . . . . . . . . . . . . 17 ⊢ ∪ 𝑥 ∈ {0}ran (𝑅↑_𝑟𝑥) = ran (𝑅↑_𝑟0)
77	74, 76	eqtrdi 2788	. . . . . . . . . . . . . . . 16 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) = ran (𝑅↑_𝑟0))
78	69	rneqd 5935	. . . . . . . . . . . . . . . . 17 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ran (𝑅↑_𝑟0) = ran ( I ↾ (dom 𝑅 ∪ ran 𝑅)))
79		rnresi 6071	. . . . . . . . . . . . . . . . 17 ⊢ ran ( I ↾ (dom 𝑅 ∪ ran 𝑅)) = (dom 𝑅 ∪ ran 𝑅)
80	78, 79	eqtrdi 2788	. . . . . . . . . . . . . . . 16 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ran (𝑅↑_𝑟0) = (dom 𝑅 ∪ ran 𝑅))
81	77, 80	eqtrd 2772	. . . . . . . . . . . . . . 15 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) = (dom 𝑅 ∪ ran 𝑅))
82	73, 81	uneq12d 4163	. . . . . . . . . . . . . 14 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → (∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) = ((dom 𝑅 ∪ ran 𝑅) ∪ (dom 𝑅 ∪ ran 𝑅)))
83		unidm 4151	. . . . . . . . . . . . . 14 ⊢ ((dom 𝑅 ∪ ran 𝑅) ∪ (dom 𝑅 ∪ ran 𝑅)) = (dom 𝑅 ∪ ran 𝑅)
84	82, 83	eqtrdi 2788	. . . . . . . . . . . . 13 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → (∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) = (dom 𝑅 ∪ ran 𝑅))
85	84	uneq1d 4161	. . . . . . . . . . . 12 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = ((dom 𝑅 ∪ ran 𝑅) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))))
86		relexpdmg 14985	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑥 ∈ ℕ₀ ∧ 𝑅 ∈ 𝑉) → dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
87	86	expcom 414	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑅 ∈ 𝑉 → (𝑥 ∈ ℕ₀ → dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅)))
88	87	ralrimiv 3145	. . . . . . . . . . . . . . . . 17 ⊢ (𝑅 ∈ 𝑉 → ∀𝑥 ∈ ℕ₀ dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
89	88	ad2antll 727	. . . . . . . . . . . . . . . 16 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∀𝑥 ∈ ℕ₀ dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
90		olc 866	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑍 ⊆ ℕ₀ → ({1} ⊆ ℕ₀ ∨ 𝑍 ⊆ ℕ₀))
91	90	ad2antrl 726	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ({1} ⊆ ℕ₀ ∨ 𝑍 ⊆ ℕ₀))
92		inss 4237	. . . . . . . . . . . . . . . . . . . 20 ⊢ (({1} ⊆ ℕ₀ ∨ 𝑍 ⊆ ℕ₀) → ({1} ∩ 𝑍) ⊆ ℕ₀)
93	91, 92	syl 17	. . . . . . . . . . . . . . . . . . 19 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ({1} ∩ 𝑍) ⊆ ℕ₀)
94	93	sseld 3980	. . . . . . . . . . . . . . . . . 18 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → (𝑥 ∈ ({1} ∩ 𝑍) → 𝑥 ∈ ℕ₀))
95	94	imim1d 82	. . . . . . . . . . . . . . . . 17 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ((𝑥 ∈ ℕ₀ → dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅)) → (𝑥 ∈ ({1} ∩ 𝑍) → dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))))
96	95	ralimdv2 3163	. . . . . . . . . . . . . . . 16 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → (∀𝑥 ∈ ℕ₀ dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅) → ∀𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅)))
97	89, 96	mpd 15	. . . . . . . . . . . . . . 15 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∀𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
98		iunss 5047	. . . . . . . . . . . . . . 15 ⊢ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅) ↔ ∀𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
99	97, 98	sylibr 233	. . . . . . . . . . . . . 14 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
100		relexprng 14989	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑥 ∈ ℕ₀ ∧ 𝑅 ∈ 𝑉) → ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
101	100	expcom 414	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑅 ∈ 𝑉 → (𝑥 ∈ ℕ₀ → ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅)))
102	101	ralrimiv 3145	. . . . . . . . . . . . . . . . 17 ⊢ (𝑅 ∈ 𝑉 → ∀𝑥 ∈ ℕ₀ ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
103	102	ad2antll 727	. . . . . . . . . . . . . . . 16 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∀𝑥 ∈ ℕ₀ ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
104	94	imim1d 82	. . . . . . . . . . . . . . . . 17 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ((𝑥 ∈ ℕ₀ → ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅)) → (𝑥 ∈ ({1} ∩ 𝑍) → ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))))
105	104	ralimdv2 3163	. . . . . . . . . . . . . . . 16 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → (∀𝑥 ∈ ℕ₀ ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅) → ∀𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅)))
106	103, 105	mpd 15	. . . . . . . . . . . . . . 15 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∀𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
107		iunss 5047	. . . . . . . . . . . . . . 15 ⊢ (∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅) ↔ ∀𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
108	106, 107	sylibr 233	. . . . . . . . . . . . . 14 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
109	99, 108	unssd 4185	. . . . . . . . . . . . 13 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ⊆ (dom 𝑅 ∪ ran 𝑅))
110		ssequn2 4182	. . . . . . . . . . . . 13 ⊢ ((∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ⊆ (dom 𝑅 ∪ ran 𝑅) ↔ ((dom 𝑅 ∪ ran 𝑅) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = (dom 𝑅 ∪ ran 𝑅))
111	109, 110	sylib 217	. . . . . . . . . . . 12 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ((dom 𝑅 ∪ ran 𝑅) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = (dom 𝑅 ∪ ran 𝑅))
112	85, 111	eqtrd 2772	. . . . . . . . . . 11 ⊢ ((0 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = (dom 𝑅 ∪ ran 𝑅))
113	112	ex 413	. . . . . . . . . 10 ⊢ (0 ∈ 𝑍 → ((𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉) → ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = (dom 𝑅 ∪ ran 𝑅)))
114		simpl 483	. . . . . . . . . . . . . . . . . . 19 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → 1 ∈ 𝑍)
115	114	snssd 4811	. . . . . . . . . . . . . . . . . 18 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → {1} ⊆ 𝑍)
116		df-ss 3964	. . . . . . . . . . . . . . . . . 18 ⊢ ({1} ⊆ 𝑍 ↔ ({1} ∩ 𝑍) = {1})
117	115, 116	sylib 217	. . . . . . . . . . . . . . . . 17 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ({1} ∩ 𝑍) = {1})
118	117	iuneq1d 5023	. . . . . . . . . . . . . . . 16 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) = ∪ 𝑥 ∈ {1}dom (𝑅↑_𝑟𝑥))
119		1ex 11206	. . . . . . . . . . . . . . . . 17 ⊢ 1 ∈ V
120		oveq2 7413	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 = 1 → (𝑅↑_𝑟𝑥) = (𝑅↑_𝑟1))
121	120	dmeqd 5903	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 = 1 → dom (𝑅↑_𝑟𝑥) = dom (𝑅↑_𝑟1))
122	119, 121	iunxsn 5093	. . . . . . . . . . . . . . . 16 ⊢ ∪ 𝑥 ∈ {1}dom (𝑅↑_𝑟𝑥) = dom (𝑅↑_𝑟1)
123	118, 122	eqtrdi 2788	. . . . . . . . . . . . . . 15 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) = dom (𝑅↑_𝑟1))
124		relexp1g 14969	. . . . . . . . . . . . . . . . 17 ⊢ (𝑅 ∈ 𝑉 → (𝑅↑_𝑟1) = 𝑅)
125	124	ad2antll 727	. . . . . . . . . . . . . . . 16 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → (𝑅↑_𝑟1) = 𝑅)
126	125	dmeqd 5903	. . . . . . . . . . . . . . 15 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → dom (𝑅↑_𝑟1) = dom 𝑅)
127	123, 126	eqtrd 2772	. . . . . . . . . . . . . 14 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) = dom 𝑅)
128	117	iuneq1d 5023	. . . . . . . . . . . . . . . 16 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) = ∪ 𝑥 ∈ {1}ran (𝑅↑_𝑟𝑥))
129	120	rneqd 5935	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 = 1 → ran (𝑅↑_𝑟𝑥) = ran (𝑅↑_𝑟1))
130	119, 129	iunxsn 5093	. . . . . . . . . . . . . . . 16 ⊢ ∪ 𝑥 ∈ {1}ran (𝑅↑_𝑟𝑥) = ran (𝑅↑_𝑟1)
131	128, 130	eqtrdi 2788	. . . . . . . . . . . . . . 15 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) = ran (𝑅↑_𝑟1))
132	125	rneqd 5935	. . . . . . . . . . . . . . 15 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ran (𝑅↑_𝑟1) = ran 𝑅)
133	131, 132	eqtrd 2772	. . . . . . . . . . . . . 14 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) = ran 𝑅)
134	127, 133	uneq12d 4163	. . . . . . . . . . . . 13 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) = (dom 𝑅 ∪ ran 𝑅))
135	134	uneq2d 4162	. . . . . . . . . . . 12 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (dom 𝑅 ∪ ran 𝑅)))
136	88	ad2antll 727	. . . . . . . . . . . . . . . 16 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∀𝑥 ∈ ℕ₀ dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
137		olc 866	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑍 ⊆ ℕ₀ → ({0} ⊆ ℕ₀ ∨ 𝑍 ⊆ ℕ₀))
138	137	ad2antrl 726	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ({0} ⊆ ℕ₀ ∨ 𝑍 ⊆ ℕ₀))
139		inss 4237	. . . . . . . . . . . . . . . . . . . 20 ⊢ (({0} ⊆ ℕ₀ ∨ 𝑍 ⊆ ℕ₀) → ({0} ∩ 𝑍) ⊆ ℕ₀)
140	138, 139	syl 17	. . . . . . . . . . . . . . . . . . 19 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ({0} ∩ 𝑍) ⊆ ℕ₀)
141	140	sseld 3980	. . . . . . . . . . . . . . . . . 18 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → (𝑥 ∈ ({0} ∩ 𝑍) → 𝑥 ∈ ℕ₀))
142	141	imim1d 82	. . . . . . . . . . . . . . . . 17 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ((𝑥 ∈ ℕ₀ → dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅)) → (𝑥 ∈ ({0} ∩ 𝑍) → dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))))
143	142	ralimdv2 3163	. . . . . . . . . . . . . . . 16 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → (∀𝑥 ∈ ℕ₀ dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅) → ∀𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅)))
144	136, 143	mpd 15	. . . . . . . . . . . . . . 15 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∀𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
145		iunss 5047	. . . . . . . . . . . . . . 15 ⊢ (∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅) ↔ ∀𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
146	144, 145	sylibr 233	. . . . . . . . . . . . . 14 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
147	102	ad2antll 727	. . . . . . . . . . . . . . . 16 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∀𝑥 ∈ ℕ₀ ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
148	141	imim1d 82	. . . . . . . . . . . . . . . . 17 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ((𝑥 ∈ ℕ₀ → ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅)) → (𝑥 ∈ ({0} ∩ 𝑍) → ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))))
149	148	ralimdv2 3163	. . . . . . . . . . . . . . . 16 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → (∀𝑥 ∈ ℕ₀ ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅) → ∀𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅)))
150	147, 149	mpd 15	. . . . . . . . . . . . . . 15 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∀𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
151		iunss 5047	. . . . . . . . . . . . . . 15 ⊢ (∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅) ↔ ∀𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
152	150, 151	sylibr 233	. . . . . . . . . . . . . 14 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
153	146, 152	unssd 4185	. . . . . . . . . . . . 13 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → (∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ⊆ (dom 𝑅 ∪ ran 𝑅))
154		ssequn1 4179	. . . . . . . . . . . . 13 ⊢ ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ⊆ (dom 𝑅 ∪ ran 𝑅) ↔ ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (dom 𝑅 ∪ ran 𝑅)) = (dom 𝑅 ∪ ran 𝑅))
155	153, 154	sylib 217	. . . . . . . . . . . 12 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (dom 𝑅 ∪ ran 𝑅)) = (dom 𝑅 ∪ ran 𝑅))
156	135, 155	eqtrd 2772	. . . . . . . . . . 11 ⊢ ((1 ∈ 𝑍 ∧ (𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉)) → ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = (dom 𝑅 ∪ ran 𝑅))
157	156	ex 413	. . . . . . . . . 10 ⊢ (1 ∈ 𝑍 → ((𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉) → ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = (dom 𝑅 ∪ ran 𝑅)))
158	113, 157	jaoi 855	. . . . . . . . 9 ⊢ ((0 ∈ 𝑍 ∨ 1 ∈ 𝑍) → ((𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉) → ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = (dom 𝑅 ∪ ran 𝑅)))
159	57, 158	syl 17	. . . . . . . 8 ⊢ (({0, 1} ∩ 𝑍) ≠ ∅ → ((𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉) → ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = (dom 𝑅 ∪ ran 𝑅)))
160	159	3impib 1116	. . . . . . 7 ⊢ ((({0, 1} ∩ 𝑍) ≠ ∅ ∧ 𝑍 ⊆ ℕ₀ ∧ 𝑅 ∈ 𝑉) → ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = (dom 𝑅 ∪ ran 𝑅))
161	160	3com13 1124	. . . . . 6 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀ ∧ ({0, 1} ∩ 𝑍) ≠ ∅) → ((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) = (dom 𝑅 ∪ ran 𝑅))
162	161	uneq1d 4161	. . . . 5 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀ ∧ ({0, 1} ∩ 𝑍) ≠ ∅) → (((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) ∪ (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥))) = ((dom 𝑅 ∪ ran 𝑅) ∪ (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥))))
163	88	adantr 481	. . . . . . . . . 10 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀) → ∀𝑥 ∈ ℕ₀ dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
164		ssel 3974	. . . . . . . . . . . . 13 ⊢ (𝑍 ⊆ ℕ₀ → (𝑥 ∈ 𝑍 → 𝑥 ∈ ℕ₀))
165	164	adantl 482	. . . . . . . . . . . 12 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀) → (𝑥 ∈ 𝑍 → 𝑥 ∈ ℕ₀))
166	165	imim1d 82	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀) → ((𝑥 ∈ ℕ₀ → dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅)) → (𝑥 ∈ 𝑍 → dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))))
167	166	ralimdv2 3163	. . . . . . . . . 10 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀) → (∀𝑥 ∈ ℕ₀ dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅) → ∀𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅)))
168	163, 167	mpd 15	. . . . . . . . 9 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀) → ∀𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
169		iunss 5047	. . . . . . . . 9 ⊢ (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅) ↔ ∀𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
170	168, 169	sylibr 233	. . . . . . . 8 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀) → ∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
171	102	adantr 481	. . . . . . . . . 10 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀) → ∀𝑥 ∈ ℕ₀ ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
172	165	imim1d 82	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀) → ((𝑥 ∈ ℕ₀ → ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅)) → (𝑥 ∈ 𝑍 → ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))))
173	172	ralimdv2 3163	. . . . . . . . . 10 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀) → (∀𝑥 ∈ ℕ₀ ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅) → ∀𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅)))
174	171, 173	mpd 15	. . . . . . . . 9 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀) → ∀𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
175		iunss 5047	. . . . . . . . 9 ⊢ (∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅) ↔ ∀𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
176	174, 175	sylibr 233	. . . . . . . 8 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀) → ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥) ⊆ (dom 𝑅 ∪ ran 𝑅))
177	170, 176	unssd 4185	. . . . . . 7 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀) → (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥)) ⊆ (dom 𝑅 ∪ ran 𝑅))
178	177	3adant3 1132	. . . . . 6 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀ ∧ ({0, 1} ∩ 𝑍) ≠ ∅) → (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥)) ⊆ (dom 𝑅 ∪ ran 𝑅))
179		ssequn2 4182	. . . . . 6 ⊢ ((∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥)) ⊆ (dom 𝑅 ∪ ran 𝑅) ↔ ((dom 𝑅 ∪ ran 𝑅) ∪ (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥))) = (dom 𝑅 ∪ ran 𝑅))
180	178, 179	sylib 217	. . . . 5 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀ ∧ ({0, 1} ∩ 𝑍) ≠ ∅) → ((dom 𝑅 ∪ ran 𝑅) ∪ (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥))) = (dom 𝑅 ∪ ran 𝑅))
181	162, 180	eqtrd 2772	. . . 4 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀ ∧ ({0, 1} ∩ 𝑍) ≠ ∅) → (((∪ 𝑥 ∈ ({0} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({0} ∩ 𝑍)ran (𝑅↑_𝑟𝑥)) ∪ (∪ 𝑥 ∈ ({1} ∩ 𝑍)dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ ({1} ∩ 𝑍)ran (𝑅↑_𝑟𝑥))) ∪ (∪ 𝑥 ∈ 𝑍 dom (𝑅↑_𝑟𝑥) ∪ ∪ 𝑥 ∈ 𝑍 ran (𝑅↑_𝑟𝑥))) = (dom 𝑅 ∪ ran 𝑅))
182	35, 181	eqtrid 2784	. . 3 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀ ∧ ({0, 1} ∩ 𝑍) ≠ ∅) → (dom ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) ∪ ran ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥)) = (dom 𝑅 ∪ ran 𝑅))
183		nn0ex 12474	. . . . . . 7 ⊢ ℕ₀ ∈ V
184	183	ssex 5320	. . . . . 6 ⊢ (𝑍 ⊆ ℕ₀ → 𝑍 ∈ V)
185		inex2g 5319	. . . . . . . . 9 ⊢ (𝑍 ∈ V → ({0} ∩ 𝑍) ∈ V)
186		inex2g 5319	. . . . . . . . 9 ⊢ (𝑍 ∈ V → ({1} ∩ 𝑍) ∈ V)
187	185, 186	unexd 7737	. . . . . . . 8 ⊢ (𝑍 ∈ V → (({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∈ V)
188		unexg 7732	. . . . . . . 8 ⊢ (((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∈ V ∧ 𝑍 ∈ V) → ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍) ∈ V)
189	187, 188	mpancom 686	. . . . . . 7 ⊢ (𝑍 ∈ V → ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍) ∈ V)
190		ovex 7438	. . . . . . . 8 ⊢ (𝑅↑_𝑟𝑥) ∈ V
191	190	rgenw 3065	. . . . . . 7 ⊢ ∀𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) ∈ V
192		iunexg 7946	. . . . . . 7 ⊢ ((((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍) ∈ V ∧ ∀𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) ∈ V) → ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) ∈ V)
193	189, 191, 192	sylancl 586	. . . . . 6 ⊢ (𝑍 ∈ V → ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) ∈ V)
194	184, 193	syl 17	. . . . 5 ⊢ (𝑍 ⊆ ℕ₀ → ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) ∈ V)
195	194	3ad2ant2 1134	. . . 4 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀ ∧ ({0, 1} ∩ 𝑍) ≠ ∅) → ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) ∈ V)
196		simp1 1136	. . . 4 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀ ∧ ({0, 1} ∩ 𝑍) ≠ ∅) → 𝑅 ∈ 𝑉)
197		relexp0eq 42437	. . . 4 ⊢ ((∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) ∈ V ∧ 𝑅 ∈ 𝑉) → ((dom ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) ∪ ran ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥)) = (dom 𝑅 ∪ ran 𝑅) ↔ (∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥)↑_𝑟0) = (𝑅↑_𝑟0)))
198	195, 196, 197	syl2anc 584	. . 3 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀ ∧ ({0, 1} ∩ 𝑍) ≠ ∅) → ((dom ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥) ∪ ran ∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥)) = (dom 𝑅 ∪ ran 𝑅) ↔ (∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥)↑_𝑟0) = (𝑅↑_𝑟0)))
199	182, 198	mpbid 231	. 2 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀ ∧ ({0, 1} ∩ 𝑍) ≠ ∅) → (∪ 𝑥 ∈ ((({0} ∩ 𝑍) ∪ ({1} ∩ 𝑍)) ∪ 𝑍)(𝑅↑_𝑟𝑥)↑_𝑟0) = (𝑅↑_𝑟0))
200	12, 199	eqtrid 2784	1 ⊢ ((𝑅 ∈ 𝑉 ∧ 𝑍 ⊆ ℕ₀ ∧ ({0, 1} ∩ 𝑍) ≠ ∅) → (∪ 𝑥 ∈ 𝑍 (𝑅↑_𝑟𝑥)↑_𝑟0) = (𝑅↑_𝑟0))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 396 ∨ wo 845 ∧ w3a 1087 = wceq 1541 ∈ wcel 2106 ≠ wne 2940 ∀wral 3061 Vcvv 3474 ∪ cun 3945 ∩ cin 3946 ⊆ wss 3947 ∅c0 4321 {csn 4627 {cpr 4629 ∪ ciun 4996 I cid 5572 dom cdm 5675 ran crn 5676 ↾ cres 5677 (class class class)co 7405 0cc0 11106 1c1 11107 ℕ₀cn0 12468 ↑_𝑟crelexp 14962

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 2703 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183

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 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6297 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7852 df-2nd 7972 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-er 8699 df-en 8936 df-dom 8937 df-sdom 8938 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11442 df-neg 11443 df-nn 12209 df-n0 12469 df-z 12555 df-uz 12819 df-seq 13963 df-relexp 14963

This theorem is referenced by: corclrcl 42443 corcltrcl 42475

W3C validator