Theorem negsid 28049

Description: Surreal addition of a number and its negative. Theorem 4(iii) of [Conway] p. 17. (Contributed by Scott Fenton, 3-Feb-2025.)

Assertion

Ref	Expression
negsid	⊢ (𝐴 ∈ No → (𝐴 +s ( -us ‘𝐴)) = 0s )

Proof of Theorem negsid

Dummy variables 𝑎 𝑏 𝑐 𝑑 𝑝 𝑞 𝑥 𝑥_𝐿 𝑥_𝑅 𝑥_𝑂 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		id 22	. . . 4 ⊢ (𝑥 = 𝑥𝑂 → 𝑥 = 𝑥𝑂)
2		fveq2 6842	. . . 4 ⊢ (𝑥 = 𝑥𝑂 → ( -us ‘𝑥) = ( -us ‘𝑥𝑂))
3	1, 2	oveq12d 7386	. . 3 ⊢ (𝑥 = 𝑥𝑂 → (𝑥 +s ( -us ‘𝑥)) = (𝑥𝑂 +s ( -us ‘𝑥𝑂)))
4	3	eqeq1d 2739	. 2 ⊢ (𝑥 = 𝑥𝑂 → ((𝑥 +s ( -us ‘𝑥)) = 0s ↔ (𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ))
5		id 22	. . . 4 ⊢ (𝑥 = 𝐴 → 𝑥 = 𝐴)
6		fveq2 6842	. . . 4 ⊢ (𝑥 = 𝐴 → ( -us ‘𝑥) = ( -us ‘𝐴))
7	5, 6	oveq12d 7386	. . 3 ⊢ (𝑥 = 𝐴 → (𝑥 +s ( -us ‘𝑥)) = (𝐴 +s ( -us ‘𝐴)))
8	7	eqeq1d 2739	. 2 ⊢ (𝑥 = 𝐴 → ((𝑥 +s ( -us ‘𝑥)) = 0s ↔ (𝐴 +s ( -us ‘𝐴)) = 0s ))
9		lltr 27870	. . . . . 6 ⊢ ( L ‘𝑥) <<s ( R ‘𝑥)
10	9	a1i 11	. . . . 5 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → ( L ‘𝑥) <<s ( R ‘𝑥))
11		negcut2 28048	. . . . . 6 ⊢ (𝑥 ∈ No → ( -us “ ( R ‘𝑥)) <<s ( -us “ ( L ‘𝑥)))
12	11	adantr 480	. . . . 5 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → ( -us “ ( R ‘𝑥)) <<s ( -us “ ( L ‘𝑥)))
13		lrcut 27912	. . . . . . 7 ⊢ (𝑥 ∈ No → (( L ‘𝑥) |s ( R ‘𝑥)) = 𝑥)
14	13	adantr 480	. . . . . 6 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → (( L ‘𝑥) |s ( R ‘𝑥)) = 𝑥)
15	14	eqcomd 2743	. . . . 5 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → 𝑥 = (( L ‘𝑥) |s ( R ‘𝑥)))
16		negsval 28033	. . . . . 6 ⊢ (𝑥 ∈ No → ( -us ‘𝑥) = (( -us “ ( R ‘𝑥)) |s ( -us “ ( L ‘𝑥))))
17	16	adantr 480	. . . . 5 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → ( -us ‘𝑥) = (( -us “ ( R ‘𝑥)) |s ( -us “ ( L ‘𝑥))))
18	10, 12, 15, 17	addsunif 28010	. . . 4 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → (𝑥 +s ( -us ‘𝑥)) = (({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑝 ∈ ( -us “ ( R ‘𝑥))𝑏 = (𝑥 +s 𝑝)}) |s ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑞 ∈ ( -us “ ( L ‘𝑥))𝑑 = (𝑥 +s 𝑞)})))
19		negsfn 28031	. . . . . . . . 9 ⊢ -us Fn No
20		rightssno 27882	. . . . . . . . 9 ⊢ ( R ‘𝑥) ⊆ No
21		oveq2 7376	. . . . . . . . . . 11 ⊢ (𝑝 = ( -us ‘𝑥𝑅) → (𝑥 +s 𝑝) = (𝑥 +s ( -us ‘𝑥𝑅)))
22	21	eqeq2d 2748	. . . . . . . . . 10 ⊢ (𝑝 = ( -us ‘𝑥𝑅) → (𝑏 = (𝑥 +s 𝑝) ↔ 𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))))
23	22	rexima 7194	. . . . . . . . 9 ⊢ (( -us Fn No ∧ ( R ‘𝑥) ⊆ No ) → (∃𝑝 ∈ ( -us “ ( R ‘𝑥))𝑏 = (𝑥 +s 𝑝) ↔ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))))
24	19, 20, 23	mp2an 693	. . . . . . . 8 ⊢ (∃𝑝 ∈ ( -us “ ( R ‘𝑥))𝑏 = (𝑥 +s 𝑝) ↔ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅)))
25	24	abbii 2804	. . . . . . 7 ⊢ {𝑏 ∣ ∃𝑝 ∈ ( -us “ ( R ‘𝑥))𝑏 = (𝑥 +s 𝑝)} = {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))}
26	25	uneq2i 4119	. . . . . 6 ⊢ ({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑝 ∈ ( -us “ ( R ‘𝑥))𝑏 = (𝑥 +s 𝑝)}) = ({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))})
27		leftssno 27881	. . . . . . . . 9 ⊢ ( L ‘𝑥) ⊆ No
28		oveq2 7376	. . . . . . . . . . 11 ⊢ (𝑞 = ( -us ‘𝑥𝐿) → (𝑥 +s 𝑞) = (𝑥 +s ( -us ‘𝑥𝐿)))
29	28	eqeq2d 2748	. . . . . . . . . 10 ⊢ (𝑞 = ( -us ‘𝑥𝐿) → (𝑑 = (𝑥 +s 𝑞) ↔ 𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))))
30	29	rexima 7194	. . . . . . . . 9 ⊢ (( -us Fn No ∧ ( L ‘𝑥) ⊆ No ) → (∃𝑞 ∈ ( -us “ ( L ‘𝑥))𝑑 = (𝑥 +s 𝑞) ↔ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))))
31	19, 27, 30	mp2an 693	. . . . . . . 8 ⊢ (∃𝑞 ∈ ( -us “ ( L ‘𝑥))𝑑 = (𝑥 +s 𝑞) ↔ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿)))
32	31	abbii 2804	. . . . . . 7 ⊢ {𝑑 ∣ ∃𝑞 ∈ ( -us “ ( L ‘𝑥))𝑑 = (𝑥 +s 𝑞)} = {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))}
33	32	uneq2i 4119	. . . . . 6 ⊢ ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑞 ∈ ( -us “ ( L ‘𝑥))𝑑 = (𝑥 +s 𝑞)}) = ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))})
34	26, 33	oveq12i 7380	. . . . 5 ⊢ (({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑝 ∈ ( -us “ ( R ‘𝑥))𝑏 = (𝑥 +s 𝑝)}) |s ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑞 ∈ ( -us “ ( L ‘𝑥))𝑑 = (𝑥 +s 𝑞)})) = (({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))}) |s ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))}))
35		fvex 6855	. . . . . . . . . 10 ⊢ ( L ‘𝑥) ∈ V
36	35	abrexex 7916	. . . . . . . . 9 ⊢ {𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∈ V
37		fvex 6855	. . . . . . . . . 10 ⊢ ( R ‘𝑥) ∈ V
38	37	abrexex 7916	. . . . . . . . 9 ⊢ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))} ∈ V
39	36, 38	unex 7699	. . . . . . . 8 ⊢ ({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))}) ∈ V
40	39	a1i 11	. . . . . . 7 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → ({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))}) ∈ V)
41		snex 5385	. . . . . . . 8 ⊢ { 0s } ∈ V
42	41	a1i 11	. . . . . . 7 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → { 0s } ∈ V)
43	27	sseli 3931	. . . . . . . . . . . . 13 ⊢ (𝑥𝐿 ∈ ( L ‘𝑥) → 𝑥𝐿 ∈ No )
44	43	adantl 481	. . . . . . . . . . . 12 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → 𝑥𝐿 ∈ No )
45		simpll 767	. . . . . . . . . . . . 13 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → 𝑥 ∈ No )
46	45	negscld 28045	. . . . . . . . . . . 12 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → ( -us ‘𝑥) ∈ No )
47	44, 46	addscld 27988	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → (𝑥𝐿 +s ( -us ‘𝑥)) ∈ No )
48		eleq1 2825	. . . . . . . . . . 11 ⊢ (𝑎 = (𝑥𝐿 +s ( -us ‘𝑥)) → (𝑎 ∈ No ↔ (𝑥𝐿 +s ( -us ‘𝑥)) ∈ No ))
49	47, 48	syl5ibrcom 247	. . . . . . . . . 10 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → (𝑎 = (𝑥𝐿 +s ( -us ‘𝑥)) → 𝑎 ∈ No ))
50	49	rexlimdva 3139	. . . . . . . . 9 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → (∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥)) → 𝑎 ∈ No ))
51	50	abssdv 4021	. . . . . . . 8 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → {𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ⊆ No )
52		simpll 767	. . . . . . . . . . . 12 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → 𝑥 ∈ No )
53	20	sseli 3931	. . . . . . . . . . . . . 14 ⊢ (𝑥𝑅 ∈ ( R ‘𝑥) → 𝑥𝑅 ∈ No )
54	53	adantl 481	. . . . . . . . . . . . 13 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → 𝑥𝑅 ∈ No )
55	54	negscld 28045	. . . . . . . . . . . 12 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → ( -us ‘𝑥𝑅) ∈ No )
56	52, 55	addscld 27988	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → (𝑥 +s ( -us ‘𝑥𝑅)) ∈ No )
57		eleq1 2825	. . . . . . . . . . 11 ⊢ (𝑏 = (𝑥 +s ( -us ‘𝑥𝑅)) → (𝑏 ∈ No ↔ (𝑥 +s ( -us ‘𝑥𝑅)) ∈ No ))
58	56, 57	syl5ibrcom 247	. . . . . . . . . 10 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → (𝑏 = (𝑥 +s ( -us ‘𝑥𝑅)) → 𝑏 ∈ No ))
59	58	rexlimdva 3139	. . . . . . . . 9 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → (∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅)) → 𝑏 ∈ No ))
60	59	abssdv 4021	. . . . . . . 8 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))} ⊆ No )
61	51, 60	unssd 4146	. . . . . . 7 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → ({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))}) ⊆ No )
62		0no 27817	. . . . . . . 8 ⊢ 0s ∈ No
63		snssi 4766	. . . . . . . 8 ⊢ ( 0s ∈ No → { 0s } ⊆ No )
64	62, 63	mp1i 13	. . . . . . 7 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → { 0s } ⊆ No )
65		elun 4107	. . . . . . . . . . 11 ⊢ (𝑝 ∈ ({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))}) ↔ (𝑝 ∈ {𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∨ 𝑝 ∈ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))}))
66		vex 3446	. . . . . . . . . . . . 13 ⊢ 𝑝 ∈ V
67		eqeq1 2741	. . . . . . . . . . . . . 14 ⊢ (𝑎 = 𝑝 → (𝑎 = (𝑥𝐿 +s ( -us ‘𝑥)) ↔ 𝑝 = (𝑥𝐿 +s ( -us ‘𝑥))))
68	67	rexbidv 3162	. . . . . . . . . . . . 13 ⊢ (𝑎 = 𝑝 → (∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥)) ↔ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑝 = (𝑥𝐿 +s ( -us ‘𝑥))))
69	66, 68	elab 3636	. . . . . . . . . . . 12 ⊢ (𝑝 ∈ {𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ↔ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑝 = (𝑥𝐿 +s ( -us ‘𝑥)))
70		eqeq1 2741	. . . . . . . . . . . . . 14 ⊢ (𝑏 = 𝑝 → (𝑏 = (𝑥 +s ( -us ‘𝑥𝑅)) ↔ 𝑝 = (𝑥 +s ( -us ‘𝑥𝑅))))
71	70	rexbidv 3162	. . . . . . . . . . . . 13 ⊢ (𝑏 = 𝑝 → (∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅)) ↔ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑝 = (𝑥 +s ( -us ‘𝑥𝑅))))
72	66, 71	elab 3636	. . . . . . . . . . . 12 ⊢ (𝑝 ∈ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))} ↔ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑝 = (𝑥 +s ( -us ‘𝑥𝑅)))
73	69, 72	orbi12i 915	. . . . . . . . . . 11 ⊢ ((𝑝 ∈ {𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∨ 𝑝 ∈ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))}) ↔ (∃𝑥𝐿 ∈ ( L ‘𝑥)𝑝 = (𝑥𝐿 +s ( -us ‘𝑥)) ∨ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑝 = (𝑥 +s ( -us ‘𝑥𝑅))))
74	65, 73	bitri 275	. . . . . . . . . 10 ⊢ (𝑝 ∈ ({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))}) ↔ (∃𝑥𝐿 ∈ ( L ‘𝑥)𝑝 = (𝑥𝐿 +s ( -us ‘𝑥)) ∨ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑝 = (𝑥 +s ( -us ‘𝑥𝑅))))
75		velsn 4598	. . . . . . . . . 10 ⊢ (𝑞 ∈ { 0s } ↔ 𝑞 = 0s )
76	74, 75	anbi12i 629	. . . . . . . . 9 ⊢ ((𝑝 ∈ ({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))}) ∧ 𝑞 ∈ { 0s }) ↔ ((∃𝑥𝐿 ∈ ( L ‘𝑥)𝑝 = (𝑥𝐿 +s ( -us ‘𝑥)) ∨ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑝 = (𝑥 +s ( -us ‘𝑥𝑅))) ∧ 𝑞 = 0s ))
77		leftlt 27861	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥𝐿 ∈ ( L ‘𝑥) → 𝑥𝐿 <s 𝑥)
78	77	adantl 481	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → 𝑥𝐿 <s 𝑥)
79		ltnegsim 28046	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑥𝐿 ∈ No ∧ 𝑥 ∈ No ) → (𝑥𝐿 <s 𝑥 → ( -us ‘𝑥) <s ( -us ‘𝑥𝐿)))
80	44, 45, 79	syl2anc 585	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → (𝑥𝐿 <s 𝑥 → ( -us ‘𝑥) <s ( -us ‘𝑥𝐿)))
81	78, 80	mpd 15	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → ( -us ‘𝑥) <s ( -us ‘𝑥𝐿))
82	44	negscld 28045	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → ( -us ‘𝑥𝐿) ∈ No )
83	46, 82, 44	ltadds2d 28005	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → (( -us ‘𝑥) <s ( -us ‘𝑥𝐿) ↔ (𝑥𝐿 +s ( -us ‘𝑥)) <s (𝑥𝐿 +s ( -us ‘𝑥𝐿))))
84	81, 83	mpbid 232	. . . . . . . . . . . . . . . 16 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → (𝑥𝐿 +s ( -us ‘𝑥)) <s (𝑥𝐿 +s ( -us ‘𝑥𝐿)))
85		id 22	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥𝑂 = 𝑥𝐿 → 𝑥𝑂 = 𝑥𝐿)
86		fveq2 6842	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥𝑂 = 𝑥𝐿 → ( -us ‘𝑥𝑂) = ( -us ‘𝑥𝐿))
87	85, 86	oveq12d 7386	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥𝑂 = 𝑥𝐿 → (𝑥𝑂 +s ( -us ‘𝑥𝑂)) = (𝑥𝐿 +s ( -us ‘𝑥𝐿)))
88	87	eqeq1d 2739	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥𝑂 = 𝑥𝐿 → ((𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ↔ (𝑥𝐿 +s ( -us ‘𝑥𝐿)) = 0s ))
89		simplr 769	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s )
90		elun1 4136	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥𝐿 ∈ ( L ‘𝑥) → 𝑥𝐿 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥)))
91	90	adantl 481	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → 𝑥𝐿 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥)))
92	88, 89, 91	rspcdva 3579	. . . . . . . . . . . . . . . 16 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → (𝑥𝐿 +s ( -us ‘𝑥𝐿)) = 0s )
93	84, 92	breqtrd 5126	. . . . . . . . . . . . . . 15 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → (𝑥𝐿 +s ( -us ‘𝑥)) <s 0s )
94		breq1 5103	. . . . . . . . . . . . . . 15 ⊢ (𝑝 = (𝑥𝐿 +s ( -us ‘𝑥)) → (𝑝 <s 0s ↔ (𝑥𝐿 +s ( -us ‘𝑥)) <s 0s ))
95	93, 94	syl5ibrcom 247	. . . . . . . . . . . . . 14 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → (𝑝 = (𝑥𝐿 +s ( -us ‘𝑥)) → 𝑝 <s 0s ))
96	95	rexlimdva 3139	. . . . . . . . . . . . 13 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → (∃𝑥𝐿 ∈ ( L ‘𝑥)𝑝 = (𝑥𝐿 +s ( -us ‘𝑥)) → 𝑝 <s 0s ))
97	96	imp 406	. . . . . . . . . . . 12 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑝 = (𝑥𝐿 +s ( -us ‘𝑥))) → 𝑝 <s 0s )
98		rightgt 27862	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥𝑅 ∈ ( R ‘𝑥) → 𝑥 <s 𝑥𝑅)
99	98	adantl 481	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → 𝑥 <s 𝑥𝑅)
100	52, 54, 55	ltadds1d 28006	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → (𝑥 <s 𝑥𝑅 ↔ (𝑥 +s ( -us ‘𝑥𝑅)) <s (𝑥𝑅 +s ( -us ‘𝑥𝑅))))
101	99, 100	mpbid 232	. . . . . . . . . . . . . . . 16 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → (𝑥 +s ( -us ‘𝑥𝑅)) <s (𝑥𝑅 +s ( -us ‘𝑥𝑅)))
102		id 22	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥𝑂 = 𝑥𝑅 → 𝑥𝑂 = 𝑥𝑅)
103		fveq2 6842	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥𝑂 = 𝑥𝑅 → ( -us ‘𝑥𝑂) = ( -us ‘𝑥𝑅))
104	102, 103	oveq12d 7386	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥𝑂 = 𝑥𝑅 → (𝑥𝑂 +s ( -us ‘𝑥𝑂)) = (𝑥𝑅 +s ( -us ‘𝑥𝑅)))
105	104	eqeq1d 2739	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥𝑂 = 𝑥𝑅 → ((𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ↔ (𝑥𝑅 +s ( -us ‘𝑥𝑅)) = 0s ))
106		simplr 769	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s )
107		elun2 4137	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥𝑅 ∈ ( R ‘𝑥) → 𝑥𝑅 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥)))
108	107	adantl 481	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → 𝑥𝑅 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥)))
109	105, 106, 108	rspcdva 3579	. . . . . . . . . . . . . . . 16 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → (𝑥𝑅 +s ( -us ‘𝑥𝑅)) = 0s )
110	101, 109	breqtrd 5126	. . . . . . . . . . . . . . 15 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → (𝑥 +s ( -us ‘𝑥𝑅)) <s 0s )
111		breq1 5103	. . . . . . . . . . . . . . 15 ⊢ (𝑝 = (𝑥 +s ( -us ‘𝑥𝑅)) → (𝑝 <s 0s ↔ (𝑥 +s ( -us ‘𝑥𝑅)) <s 0s ))
112	110, 111	syl5ibrcom 247	. . . . . . . . . . . . . 14 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → (𝑝 = (𝑥 +s ( -us ‘𝑥𝑅)) → 𝑝 <s 0s ))
113	112	rexlimdva 3139	. . . . . . . . . . . . 13 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → (∃𝑥𝑅 ∈ ( R ‘𝑥)𝑝 = (𝑥 +s ( -us ‘𝑥𝑅)) → 𝑝 <s 0s ))
114	113	imp 406	. . . . . . . . . . . 12 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑝 = (𝑥 +s ( -us ‘𝑥𝑅))) → 𝑝 <s 0s )
115	97, 114	jaodan 960	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ (∃𝑥𝐿 ∈ ( L ‘𝑥)𝑝 = (𝑥𝐿 +s ( -us ‘𝑥)) ∨ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑝 = (𝑥 +s ( -us ‘𝑥𝑅)))) → 𝑝 <s 0s )
116		breq2 5104	. . . . . . . . . . 11 ⊢ (𝑞 = 0s → (𝑝 <s 𝑞 ↔ 𝑝 <s 0s ))
117	115, 116	syl5ibrcom 247	. . . . . . . . . 10 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ (∃𝑥𝐿 ∈ ( L ‘𝑥)𝑝 = (𝑥𝐿 +s ( -us ‘𝑥)) ∨ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑝 = (𝑥 +s ( -us ‘𝑥𝑅)))) → (𝑞 = 0s → 𝑝 <s 𝑞))
118	117	expimpd 453	. . . . . . . . 9 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → (((∃𝑥𝐿 ∈ ( L ‘𝑥)𝑝 = (𝑥𝐿 +s ( -us ‘𝑥)) ∨ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑝 = (𝑥 +s ( -us ‘𝑥𝑅))) ∧ 𝑞 = 0s ) → 𝑝 <s 𝑞))
119	76, 118	biimtrid 242	. . . . . . . 8 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → ((𝑝 ∈ ({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))}) ∧ 𝑞 ∈ { 0s }) → 𝑝 <s 𝑞))
120	119	3impib 1117	. . . . . . 7 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑝 ∈ ({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))}) ∧ 𝑞 ∈ { 0s }) → 𝑝 <s 𝑞)
121	40, 42, 61, 64, 120	sltsd 27776	. . . . . 6 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → ({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))}) <<s { 0s })
122	37	abrexex 7916	. . . . . . . . 9 ⊢ {𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∈ V
123	35	abrexex 7916	. . . . . . . . 9 ⊢ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))} ∈ V
124	122, 123	unex 7699	. . . . . . . 8 ⊢ ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))}) ∈ V
125	124	a1i 11	. . . . . . 7 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))}) ∈ V)
126	52	negscld 28045	. . . . . . . . . . . 12 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → ( -us ‘𝑥) ∈ No )
127	54, 126	addscld 27988	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → (𝑥𝑅 +s ( -us ‘𝑥)) ∈ No )
128		eleq1 2825	. . . . . . . . . . 11 ⊢ (𝑐 = (𝑥𝑅 +s ( -us ‘𝑥)) → (𝑐 ∈ No ↔ (𝑥𝑅 +s ( -us ‘𝑥)) ∈ No ))
129	127, 128	syl5ibrcom 247	. . . . . . . . . 10 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → (𝑐 = (𝑥𝑅 +s ( -us ‘𝑥)) → 𝑐 ∈ No ))
130	129	rexlimdva 3139	. . . . . . . . 9 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → (∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥)) → 𝑐 ∈ No ))
131	130	abssdv 4021	. . . . . . . 8 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → {𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ⊆ No )
132	45, 82	addscld 27988	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → (𝑥 +s ( -us ‘𝑥𝐿)) ∈ No )
133		eleq1 2825	. . . . . . . . . . 11 ⊢ (𝑑 = (𝑥 +s ( -us ‘𝑥𝐿)) → (𝑑 ∈ No ↔ (𝑥 +s ( -us ‘𝑥𝐿)) ∈ No ))
134	132, 133	syl5ibrcom 247	. . . . . . . . . 10 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → (𝑑 = (𝑥 +s ( -us ‘𝑥𝐿)) → 𝑑 ∈ No ))
135	134	rexlimdva 3139	. . . . . . . . 9 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → (∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿)) → 𝑑 ∈ No ))
136	135	abssdv 4021	. . . . . . . 8 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))} ⊆ No )
137	131, 136	unssd 4146	. . . . . . 7 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))}) ⊆ No )
138		velsn 4598	. . . . . . . . . 10 ⊢ (𝑝 ∈ { 0s } ↔ 𝑝 = 0s )
139		elun 4107	. . . . . . . . . . 11 ⊢ (𝑞 ∈ ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))}) ↔ (𝑞 ∈ {𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∨ 𝑞 ∈ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))}))
140		vex 3446	. . . . . . . . . . . . 13 ⊢ 𝑞 ∈ V
141		eqeq1 2741	. . . . . . . . . . . . . 14 ⊢ (𝑐 = 𝑞 → (𝑐 = (𝑥𝑅 +s ( -us ‘𝑥)) ↔ 𝑞 = (𝑥𝑅 +s ( -us ‘𝑥))))
142	141	rexbidv 3162	. . . . . . . . . . . . 13 ⊢ (𝑐 = 𝑞 → (∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥)) ↔ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑞 = (𝑥𝑅 +s ( -us ‘𝑥))))
143	140, 142	elab 3636	. . . . . . . . . . . 12 ⊢ (𝑞 ∈ {𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ↔ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑞 = (𝑥𝑅 +s ( -us ‘𝑥)))
144		eqeq1 2741	. . . . . . . . . . . . . 14 ⊢ (𝑑 = 𝑞 → (𝑑 = (𝑥 +s ( -us ‘𝑥𝐿)) ↔ 𝑞 = (𝑥 +s ( -us ‘𝑥𝐿))))
145	144	rexbidv 3162	. . . . . . . . . . . . 13 ⊢ (𝑑 = 𝑞 → (∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿)) ↔ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑞 = (𝑥 +s ( -us ‘𝑥𝐿))))
146	140, 145	elab 3636	. . . . . . . . . . . 12 ⊢ (𝑞 ∈ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))} ↔ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑞 = (𝑥 +s ( -us ‘𝑥𝐿)))
147	143, 146	orbi12i 915	. . . . . . . . . . 11 ⊢ ((𝑞 ∈ {𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∨ 𝑞 ∈ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))}) ↔ (∃𝑥𝑅 ∈ ( R ‘𝑥)𝑞 = (𝑥𝑅 +s ( -us ‘𝑥)) ∨ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑞 = (𝑥 +s ( -us ‘𝑥𝐿))))
148	139, 147	bitri 275	. . . . . . . . . 10 ⊢ (𝑞 ∈ ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))}) ↔ (∃𝑥𝑅 ∈ ( R ‘𝑥)𝑞 = (𝑥𝑅 +s ( -us ‘𝑥)) ∨ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑞 = (𝑥 +s ( -us ‘𝑥𝐿))))
149	138, 148	anbi12i 629	. . . . . . . . 9 ⊢ ((𝑝 ∈ { 0s } ∧ 𝑞 ∈ ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))})) ↔ (𝑝 = 0s ∧ (∃𝑥𝑅 ∈ ( R ‘𝑥)𝑞 = (𝑥𝑅 +s ( -us ‘𝑥)) ∨ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑞 = (𝑥 +s ( -us ‘𝑥𝐿)))))
150		ltnegsim 28046	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑥 ∈ No ∧ 𝑥𝑅 ∈ No ) → (𝑥 <s 𝑥𝑅 → ( -us ‘𝑥𝑅) <s ( -us ‘𝑥)))
151	52, 54, 150	syl2anc 585	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → (𝑥 <s 𝑥𝑅 → ( -us ‘𝑥𝑅) <s ( -us ‘𝑥)))
152	99, 151	mpd 15	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → ( -us ‘𝑥𝑅) <s ( -us ‘𝑥))
153	55, 126, 54	ltadds2d 28005	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → (( -us ‘𝑥𝑅) <s ( -us ‘𝑥) ↔ (𝑥𝑅 +s ( -us ‘𝑥𝑅)) <s (𝑥𝑅 +s ( -us ‘𝑥))))
154	152, 153	mpbid 232	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → (𝑥𝑅 +s ( -us ‘𝑥𝑅)) <s (𝑥𝑅 +s ( -us ‘𝑥)))
155	109, 154	eqbrtrrd 5124	. . . . . . . . . . . . . . . 16 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → 0s <s (𝑥𝑅 +s ( -us ‘𝑥)))
156		breq2 5104	. . . . . . . . . . . . . . . 16 ⊢ (𝑞 = (𝑥𝑅 +s ( -us ‘𝑥)) → ( 0s <s 𝑞 ↔ 0s <s (𝑥𝑅 +s ( -us ‘𝑥))))
157	155, 156	syl5ibrcom 247	. . . . . . . . . . . . . . 15 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝑅 ∈ ( R ‘𝑥)) → (𝑞 = (𝑥𝑅 +s ( -us ‘𝑥)) → 0s <s 𝑞))
158	157	rexlimdva 3139	. . . . . . . . . . . . . 14 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → (∃𝑥𝑅 ∈ ( R ‘𝑥)𝑞 = (𝑥𝑅 +s ( -us ‘𝑥)) → 0s <s 𝑞))
159	158	imp 406	. . . . . . . . . . . . 13 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑞 = (𝑥𝑅 +s ( -us ‘𝑥))) → 0s <s 𝑞)
160	44, 45, 82	ltadds1d 28006	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → (𝑥𝐿 <s 𝑥 ↔ (𝑥𝐿 +s ( -us ‘𝑥𝐿)) <s (𝑥 +s ( -us ‘𝑥𝐿))))
161	78, 160	mpbid 232	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → (𝑥𝐿 +s ( -us ‘𝑥𝐿)) <s (𝑥 +s ( -us ‘𝑥𝐿)))
162	92, 161	eqbrtrrd 5124	. . . . . . . . . . . . . . . 16 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → 0s <s (𝑥 +s ( -us ‘𝑥𝐿)))
163		breq2 5104	. . . . . . . . . . . . . . . 16 ⊢ (𝑞 = (𝑥 +s ( -us ‘𝑥𝐿)) → ( 0s <s 𝑞 ↔ 0s <s (𝑥 +s ( -us ‘𝑥𝐿))))
164	162, 163	syl5ibrcom 247	. . . . . . . . . . . . . . 15 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑥𝐿 ∈ ( L ‘𝑥)) → (𝑞 = (𝑥 +s ( -us ‘𝑥𝐿)) → 0s <s 𝑞))
165	164	rexlimdva 3139	. . . . . . . . . . . . . 14 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → (∃𝑥𝐿 ∈ ( L ‘𝑥)𝑞 = (𝑥 +s ( -us ‘𝑥𝐿)) → 0s <s 𝑞))
166	165	imp 406	. . . . . . . . . . . . 13 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑞 = (𝑥 +s ( -us ‘𝑥𝐿))) → 0s <s 𝑞)
167	159, 166	jaodan 960	. . . . . . . . . . . 12 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ (∃𝑥𝑅 ∈ ( R ‘𝑥)𝑞 = (𝑥𝑅 +s ( -us ‘𝑥)) ∨ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑞 = (𝑥 +s ( -us ‘𝑥𝐿)))) → 0s <s 𝑞)
168		breq1 5103	. . . . . . . . . . . 12 ⊢ (𝑝 = 0s → (𝑝 <s 𝑞 ↔ 0s <s 𝑞))
169	167, 168	syl5ibrcom 247	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ (∃𝑥𝑅 ∈ ( R ‘𝑥)𝑞 = (𝑥𝑅 +s ( -us ‘𝑥)) ∨ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑞 = (𝑥 +s ( -us ‘𝑥𝐿)))) → (𝑝 = 0s → 𝑝 <s 𝑞))
170	169	ex 412	. . . . . . . . . 10 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → ((∃𝑥𝑅 ∈ ( R ‘𝑥)𝑞 = (𝑥𝑅 +s ( -us ‘𝑥)) ∨ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑞 = (𝑥 +s ( -us ‘𝑥𝐿))) → (𝑝 = 0s → 𝑝 <s 𝑞)))
171	170	impcomd 411	. . . . . . . . 9 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → ((𝑝 = 0s ∧ (∃𝑥𝑅 ∈ ( R ‘𝑥)𝑞 = (𝑥𝑅 +s ( -us ‘𝑥)) ∨ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑞 = (𝑥 +s ( -us ‘𝑥𝐿)))) → 𝑝 <s 𝑞))
172	149, 171	biimtrid 242	. . . . . . . 8 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → ((𝑝 ∈ { 0s } ∧ 𝑞 ∈ ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))})) → 𝑝 <s 𝑞))
173	172	3impib 1117	. . . . . . 7 ⊢ (((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) ∧ 𝑝 ∈ { 0s } ∧ 𝑞 ∈ ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))})) → 𝑝 <s 𝑞)
174	42, 125, 64, 137, 173	sltsd 27776	. . . . . 6 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → { 0s } <<s ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))}))
175	121, 174	cuteq0 27823	. . . . 5 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → (({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑏 = (𝑥 +s ( -us ‘𝑥𝑅))}) |s ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑑 = (𝑥 +s ( -us ‘𝑥𝐿))})) = 0s )
176	34, 175	eqtrid 2784	. . . 4 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → (({𝑎 ∣ ∃𝑥𝐿 ∈ ( L ‘𝑥)𝑎 = (𝑥𝐿 +s ( -us ‘𝑥))} ∪ {𝑏 ∣ ∃𝑝 ∈ ( -us “ ( R ‘𝑥))𝑏 = (𝑥 +s 𝑝)}) |s ({𝑐 ∣ ∃𝑥𝑅 ∈ ( R ‘𝑥)𝑐 = (𝑥𝑅 +s ( -us ‘𝑥))} ∪ {𝑑 ∣ ∃𝑞 ∈ ( -us “ ( L ‘𝑥))𝑑 = (𝑥 +s 𝑞)})) = 0s )
177	18, 176	eqtrd 2772	. . 3 ⊢ ((𝑥 ∈ No ∧ ∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s ) → (𝑥 +s ( -us ‘𝑥)) = 0s )
178	177	ex 412	. 2 ⊢ (𝑥 ∈ No → (∀𝑥𝑂 ∈ (( L ‘𝑥) ∪ ( R ‘𝑥))(𝑥𝑂 +s ( -us ‘𝑥𝑂)) = 0s → (𝑥 +s ( -us ‘𝑥)) = 0s ))
179	4, 8, 178	noinds 27953	1 ⊢ (𝐴 ∈ No → (𝐴 +s ( -us ‘𝐴)) = 0s )

Syntax hints:   → wi 4   ↔ wb 206   ∧ wa 395   ∨ wo 848   = wceq 1542   ∈ wcel 2114  {cab 2715  ∀wral 3052  ∃wrex 3062  Vcvv 3442   ∪ cun 3901   ⊆ wss 3903  {csn 4582   class class class wbr 5100   “ cima 5635   Fn wfn 6495  ‘cfv 6500  (class class class)co 7368   No csur 27619   <s clts 27620   <<s cslts 27765   |s ccuts 27767   0_s c0s 27813   L cleft 27833   R cright 27834   +_s cadds 27967   -u_s cnegs 28027

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 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-rep 5226  ax-sep 5243  ax-nul 5253  ax-pow 5312  ax-pr 5379  ax-un 7690

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3or 1088  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-rmo 3352  df-reu 3353  df-rab 3402  df-v 3444  df-sbc 3743  df-csb 3852  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-pss 3923  df-nul 4288  df-if 4482  df-pw 4558  df-sn 4583  df-pr 4585  df-tp 4587  df-op 4589  df-ot 4591  df-uni 4866  df-int 4905  df-iun 4950  df-br 5101  df-opab 5163  df-mpt 5182  df-tr 5208  df-id 5527  df-eprel 5532  df-po 5540  df-so 5541  df-fr 5585  df-se 5586  df-we 5587  df-xp 5638  df-rel 5639  df-cnv 5640  df-co 5641  df-dm 5642  df-rn 5643  df-res 5644  df-ima 5645  df-pred 6267  df-ord 6328  df-on 6329  df-suc 6331  df-iota 6456  df-fun 6502  df-fn 6503  df-f 6504  df-f1 6505  df-fo 6506  df-f1o 6507  df-fv 6508  df-riota 7325  df-ov 7371  df-oprab 7372  df-mpo 7373  df-1st 7943  df-2nd 7944  df-frecs 8233  df-wrecs 8264  df-recs 8313  df-1o 8407  df-2o 8408  df-nadd 8604  df-no 27622  df-lts 27623  df-bday 27624  df-les 27725  df-slts 27766  df-cuts 27768  df-0s 27815  df-made 27835  df-old 27836  df-left 27838  df-right 27839  df-norec 27946  df-norec2 27957  df-adds 27968  df-negs 28029

This theorem is referenced by:  negsidd  28050  negsex  28051  negnegs  28052  negsdi  28058  subsid  28077  subadds  28078