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Theorem nosupbnd1lem1 27694

Description: Lemma for nosupbnd1 27700. Establish a soft upper bound. (Contributed by Scott Fenton, 5-Dec-2021.)

**Hypothesis**
Ref	Expression
nosupbnd1.1	⊢ 𝑆 = if(∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦, ((℩𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦) ∪ {⟨dom (℩𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦), 2_o⟩}), (𝑔 ∈ {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥∃𝑢 ∈ 𝐴 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢‘𝑔) = 𝑥))))

**Assertion**
Ref	Expression
nosupbnd1lem1	⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → ¬ 𝑆 <s (𝑈 ↾ dom 𝑆))

Distinct variable groups: 𝐴,𝑔,𝑢,𝑣,𝑥,𝑦 𝑣,𝑈 Allowed substitution hints: 𝑆(𝑥,𝑦,𝑣,𝑢,𝑔) 𝑈(𝑥,𝑦,𝑢,𝑔)

Proof of Theorem nosupbnd1lem1 Dummy variables ℎ 𝑝 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		simp2l 1207	. . . 4 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → 𝐴 ⊆ No )
2		simp3 1145	. . . 4 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → 𝑈 ∈ 𝐴)
3	1, 2	sseldd 3918	. . 3 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → 𝑈 ∈ No )
4		nosupbnd1.1	. . . . . 6 ⊢ 𝑆 = if(∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦, ((℩𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦) ∪ {⟨dom (℩𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦), 2_o⟩}), (𝑔 ∈ {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥∃𝑢 ∈ 𝐴 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢‘𝑔) = 𝑥))))
5	4	nosupno 27689	. . . . 5 ⊢ ((𝐴 ⊆ No ∧ 𝐴 ∈ V) → 𝑆 ∈ No )
6	5	3ad2ant2 1141	. . . 4 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → 𝑆 ∈ No )
7		nodmon 27636	. . . 4 ⊢ (𝑆 ∈ No → dom 𝑆 ∈ On)
8	6, 7	syl 17	. . 3 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → dom 𝑆 ∈ On)
9		noreson 27646	. . 3 ⊢ ((𝑈 ∈ No ∧ dom 𝑆 ∈ On) → (𝑈 ↾ dom 𝑆) ∈ No )
10	3, 8, 9	syl2anc 591	. 2 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → (𝑈 ↾ dom 𝑆) ∈ No )
11		dmres 5971	. . . 4 ⊢ dom (𝑈 ↾ dom 𝑆) = (dom 𝑆 ∩ dom 𝑈)
12		inss1 4168	. . . 4 ⊢ (dom 𝑆 ∩ dom 𝑈) ⊆ dom 𝑆
13	11, 12	eqsstri 3963	. . 3 ⊢ dom (𝑈 ↾ dom 𝑆) ⊆ dom 𝑆
14	13	a1i 11	. 2 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → dom (𝑈 ↾ dom 𝑆) ⊆ dom 𝑆)
15		ssidd 3940	. 2 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → dom 𝑆 ⊆ dom 𝑆)
16		iffalse 4466	. . . . . . . . . . . 12 ⊢ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 → if(∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦, ((℩𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦) ∪ {⟨dom (℩𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦), 2_o⟩}), (𝑔 ∈ {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥∃𝑢 ∈ 𝐴 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢‘𝑔) = 𝑥)))) = (𝑔 ∈ {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥∃𝑢 ∈ 𝐴 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢‘𝑔) = 𝑥))))
17	4, 16	eqtrid 2788	. . . . . . . . . . 11 ⊢ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 → 𝑆 = (𝑔 ∈ {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥∃𝑢 ∈ 𝐴 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢‘𝑔) = 𝑥))))
18	17	dmeqd 5854	. . . . . . . . . 10 ⊢ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 → dom 𝑆 = dom (𝑔 ∈ {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥∃𝑢 ∈ 𝐴 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢‘𝑔) = 𝑥))))
19		iotaex 6465	. . . . . . . . . . 11 ⊢ (℩𝑥∃𝑢 ∈ 𝐴 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢‘𝑔) = 𝑥)) ∈ V
20		eqid 2741	. . . . . . . . . . 11 ⊢ (𝑔 ∈ {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥∃𝑢 ∈ 𝐴 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢‘𝑔) = 𝑥))) = (𝑔 ∈ {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥∃𝑢 ∈ 𝐴 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢‘𝑔) = 𝑥)))
21	19, 20	dmmpti 6633	. . . . . . . . . 10 ⊢ dom (𝑔 ∈ {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥∃𝑢 ∈ 𝐴 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢‘𝑔) = 𝑥))) = {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))}
22	18, 21	eqtrdi 2792	. . . . . . . . 9 ⊢ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 → dom 𝑆 = {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))})
23	22	eleq2d 2827	. . . . . . . 8 ⊢ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 → (ℎ ∈ dom 𝑆 ↔ ℎ ∈ {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))}))
24		vex 3437	. . . . . . . . 9 ⊢ ℎ ∈ V
25		eleq1w 2824	. . . . . . . . . . . 12 ⊢ (𝑦 = ℎ → (𝑦 ∈ dom 𝑢 ↔ ℎ ∈ dom 𝑢))
26		suceq 6382	. . . . . . . . . . . . . . . 16 ⊢ (𝑦 = ℎ → suc 𝑦 = suc ℎ)
27	26	reseq2d 5938	. . . . . . . . . . . . . . 15 ⊢ (𝑦 = ℎ → (𝑢 ↾ suc 𝑦) = (𝑢 ↾ suc ℎ))
28	26	reseq2d 5938	. . . . . . . . . . . . . . 15 ⊢ (𝑦 = ℎ → (𝑣 ↾ suc 𝑦) = (𝑣 ↾ suc ℎ))
29	27, 28	eqeq12d 2757	. . . . . . . . . . . . . 14 ⊢ (𝑦 = ℎ → ((𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦) ↔ (𝑢 ↾ suc ℎ) = (𝑣 ↾ suc ℎ)))
30	29	imbi2d 342	. . . . . . . . . . . . 13 ⊢ (𝑦 = ℎ → ((¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)) ↔ (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))
31	30	ralbidv 3164	. . . . . . . . . . . 12 ⊢ (𝑦 = ℎ → (∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)) ↔ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))
32	25, 31	anbi12d 639	. . . . . . . . . . 11 ⊢ (𝑦 = ℎ → ((𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦))) ↔ (ℎ ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc ℎ) = (𝑣 ↾ suc ℎ)))))
33	32	rexbidv 3165	. . . . . . . . . 10 ⊢ (𝑦 = ℎ → (∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦))) ↔ ∃𝑢 ∈ 𝐴 (ℎ ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc ℎ) = (𝑣 ↾ suc ℎ)))))
34		dmeq 5852	. . . . . . . . . . . . 13 ⊢ (𝑢 = 𝑝 → dom 𝑢 = dom 𝑝)
35	34	eleq2d 2827	. . . . . . . . . . . 12 ⊢ (𝑢 = 𝑝 → (ℎ ∈ dom 𝑢 ↔ ℎ ∈ dom 𝑝))
36		breq2 5079	. . . . . . . . . . . . . . 15 ⊢ (𝑢 = 𝑝 → (𝑣 <s 𝑢 ↔ 𝑣 <s 𝑝))
37	36	notbid 320	. . . . . . . . . . . . . 14 ⊢ (𝑢 = 𝑝 → (¬ 𝑣 <s 𝑢 ↔ ¬ 𝑣 <s 𝑝))
38		reseq1 5932	. . . . . . . . . . . . . . 15 ⊢ (𝑢 = 𝑝 → (𝑢 ↾ suc ℎ) = (𝑝 ↾ suc ℎ))
39	38	eqeq1d 2743	. . . . . . . . . . . . . 14 ⊢ (𝑢 = 𝑝 → ((𝑢 ↾ suc ℎ) = (𝑣 ↾ suc ℎ) ↔ (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ)))
40	37, 39	imbi12d 346	. . . . . . . . . . . . 13 ⊢ (𝑢 = 𝑝 → ((¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc ℎ) = (𝑣 ↾ suc ℎ)) ↔ (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))
41	40	ralbidv 3164	. . . . . . . . . . . 12 ⊢ (𝑢 = 𝑝 → (∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc ℎ) = (𝑣 ↾ suc ℎ)) ↔ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))
42	35, 41	anbi12d 639	. . . . . . . . . . 11 ⊢ (𝑢 = 𝑝 → ((ℎ ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))) ↔ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ)))))
43	42	cbvrexvw 3220	. . . . . . . . . 10 ⊢ (∃𝑢 ∈ 𝐴 (ℎ ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))) ↔ ∃𝑝 ∈ 𝐴 (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))
44	33, 43	bitrdi 289	. . . . . . . . 9 ⊢ (𝑦 = ℎ → (∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦))) ↔ ∃𝑝 ∈ 𝐴 (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ)))))
45	24, 44	elab 3619	. . . . . . . 8 ⊢ (ℎ ∈ {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↔ ∃𝑝 ∈ 𝐴 (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))
46	23, 45	bitrdi 289	. . . . . . 7 ⊢ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 → (ℎ ∈ dom 𝑆 ↔ ∃𝑝 ∈ 𝐴 (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ)))))
47	46	3ad2ant1 1140	. . . . . 6 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → (ℎ ∈ dom 𝑆 ↔ ∃𝑝 ∈ 𝐴 (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ)))))
48		simpl1 1199	. . . . . . . . 9 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → ¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦)
49		simpl2 1200	. . . . . . . . 9 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → (𝐴 ⊆ No ∧ 𝐴 ∈ V))
50		simprl 777	. . . . . . . . 9 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → 𝑝 ∈ 𝐴)
51		simprrl 787	. . . . . . . . 9 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → ℎ ∈ dom 𝑝)
52		simprrr 788	. . . . . . . . 9 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ)))
53	4	nosupres 27693	. . . . . . . . 9 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑝 ∈ 𝐴 ∧ ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ)))) → (𝑆 ↾ suc ℎ) = (𝑝 ↾ suc ℎ))
54	48, 49, 50, 51, 52, 53	syl113anc 1391	. . . . . . . 8 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → (𝑆 ↾ suc ℎ) = (𝑝 ↾ suc ℎ))
55		simpl2l 1234	. . . . . . . . . . . . . . 15 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → 𝐴 ⊆ No )
56	55, 50	sseldd 3918	. . . . . . . . . . . . . 14 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → 𝑝 ∈ No )
57	3	adantr 482	. . . . . . . . . . . . . 14 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → 𝑈 ∈ No )
58		ltsso 27662	. . . . . . . . . . . . . . 15 ⊢ <s Or No
59		soasym 5562	. . . . . . . . . . . . . . 15 ⊢ (( <s Or No ∧ (𝑝 ∈ No ∧ 𝑈 ∈ No )) → (𝑝 <s 𝑈 → ¬ 𝑈 <s 𝑝))
60	58, 59	mpan 697	. . . . . . . . . . . . . 14 ⊢ ((𝑝 ∈ No ∧ 𝑈 ∈ No ) → (𝑝 <s 𝑈 → ¬ 𝑈 <s 𝑝))
61	56, 57, 60	syl2anc 591	. . . . . . . . . . . . 13 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → (𝑝 <s 𝑈 → ¬ 𝑈 <s 𝑝))
62		simpl3 1201	. . . . . . . . . . . . . 14 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → 𝑈 ∈ 𝐴)
63		breq1 5078	. . . . . . . . . . . . . . . . 17 ⊢ (𝑣 = 𝑈 → (𝑣 <s 𝑝 ↔ 𝑈 <s 𝑝))
64	63	notbid 320	. . . . . . . . . . . . . . . 16 ⊢ (𝑣 = 𝑈 → (¬ 𝑣 <s 𝑝 ↔ ¬ 𝑈 <s 𝑝))
65		reseq1 5932	. . . . . . . . . . . . . . . . 17 ⊢ (𝑣 = 𝑈 → (𝑣 ↾ suc ℎ) = (𝑈 ↾ suc ℎ))
66	65	eqeq2d 2752	. . . . . . . . . . . . . . . 16 ⊢ (𝑣 = 𝑈 → ((𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ) ↔ (𝑝 ↾ suc ℎ) = (𝑈 ↾ suc ℎ)))
67	64, 66	imbi12d 346	. . . . . . . . . . . . . . 15 ⊢ (𝑣 = 𝑈 → ((¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ)) ↔ (¬ 𝑈 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑈 ↾ suc ℎ))))
68	67	rspcv 3558	. . . . . . . . . . . . . 14 ⊢ (𝑈 ∈ 𝐴 → (∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ)) → (¬ 𝑈 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑈 ↾ suc ℎ))))
69	62, 52, 68	sylc 65	. . . . . . . . . . . . 13 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → (¬ 𝑈 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑈 ↾ suc ℎ)))
70	61, 69	syld 47	. . . . . . . . . . . 12 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → (𝑝 <s 𝑈 → (𝑝 ↾ suc ℎ) = (𝑈 ↾ suc ℎ)))
71	70	imp 408	. . . . . . . . . . 11 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) ∧ 𝑝 <s 𝑈) → (𝑝 ↾ suc ℎ) = (𝑈 ↾ suc ℎ))
72		nodmon 27636	. . . . . . . . . . . . . . . . 17 ⊢ (𝑝 ∈ No → dom 𝑝 ∈ On)
73	56, 72	syl 17	. . . . . . . . . . . . . . . 16 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → dom 𝑝 ∈ On)
74		onelon 6339	. . . . . . . . . . . . . . . 16 ⊢ ((dom 𝑝 ∈ On ∧ ℎ ∈ dom 𝑝) → ℎ ∈ On)
75	73, 51, 74	syl2anc 591	. . . . . . . . . . . . . . 15 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → ℎ ∈ On)
76		onsucb 7761	. . . . . . . . . . . . . . 15 ⊢ (ℎ ∈ On ↔ suc ℎ ∈ On)
77	75, 76	sylib 220	. . . . . . . . . . . . . 14 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → suc ℎ ∈ On)
78		noreson 27646	. . . . . . . . . . . . . 14 ⊢ ((𝑈 ∈ No ∧ suc ℎ ∈ On) → (𝑈 ↾ suc ℎ) ∈ No )
79	57, 77, 78	syl2anc 591	. . . . . . . . . . . . 13 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → (𝑈 ↾ suc ℎ) ∈ No )
80		sonr 5553	. . . . . . . . . . . . . 14 ⊢ (( <s Or No ∧ (𝑈 ↾ suc ℎ) ∈ No ) → ¬ (𝑈 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ))
81	58, 80	mpan 697	. . . . . . . . . . . . 13 ⊢ ((𝑈 ↾ suc ℎ) ∈ No → ¬ (𝑈 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ))
82	79, 81	syl 17	. . . . . . . . . . . 12 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → ¬ (𝑈 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ))
83	82	adantr 482	. . . . . . . . . . 11 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) ∧ 𝑝 <s 𝑈) → ¬ (𝑈 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ))
84	71, 83	eqnbrtrd 5093	. . . . . . . . . 10 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) ∧ 𝑝 <s 𝑈) → ¬ (𝑝 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ))
85	84	ex 414	. . . . . . . . 9 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → (𝑝 <s 𝑈 → ¬ (𝑝 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ)))
86		ltsres 27648	. . . . . . . . . . 11 ⊢ ((𝑝 ∈ No ∧ 𝑈 ∈ No ∧ suc ℎ ∈ On) → ((𝑝 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ) → 𝑝 <s 𝑈))
87	56, 57, 77, 86	syl3anc 1380	. . . . . . . . . 10 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → ((𝑝 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ) → 𝑝 <s 𝑈))
88	87	con3d 152	. . . . . . . . 9 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → (¬ 𝑝 <s 𝑈 → ¬ (𝑝 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ)))
89	85, 88	pm2.61d 180	. . . . . . . 8 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → ¬ (𝑝 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ))
90	54, 89	eqnbrtrd 5093	. . . . . . 7 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ (𝑝 ∈ 𝐴 ∧ (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))))) → ¬ (𝑆 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ))
91	90	rexlimdvaa 3143	. . . . . 6 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → (∃𝑝 ∈ 𝐴 (ℎ ∈ dom 𝑝 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑝 → (𝑝 ↾ suc ℎ) = (𝑣 ↾ suc ℎ))) → ¬ (𝑆 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ)))
92	47, 91	sylbid 242	. . . . 5 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → (ℎ ∈ dom 𝑆 → ¬ (𝑆 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ)))
93	92	imp 408	. . . 4 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ ℎ ∈ dom 𝑆) → ¬ (𝑆 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ))
94		nodmord 27639	. . . . . . . 8 ⊢ (𝑆 ∈ No → Ord dom 𝑆)
95		ordsucss 7762	. . . . . . . 8 ⊢ (Ord dom 𝑆 → (ℎ ∈ dom 𝑆 → suc ℎ ⊆ dom 𝑆))
96	6, 94, 95	3syl 18	. . . . . . 7 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → (ℎ ∈ dom 𝑆 → suc ℎ ⊆ dom 𝑆))
97	96	imp 408	. . . . . 6 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ ℎ ∈ dom 𝑆) → suc ℎ ⊆ dom 𝑆)
98	97	resabs1d 5967	. . . . 5 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ ℎ ∈ dom 𝑆) → ((𝑈 ↾ dom 𝑆) ↾ suc ℎ) = (𝑈 ↾ suc ℎ))
99	98	breq2d 5087	. . . 4 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ ℎ ∈ dom 𝑆) → ((𝑆 ↾ suc ℎ) <s ((𝑈 ↾ dom 𝑆) ↾ suc ℎ) ↔ (𝑆 ↾ suc ℎ) <s (𝑈 ↾ suc ℎ)))
100	93, 99	mtbird 327	. . 3 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) ∧ ℎ ∈ dom 𝑆) → ¬ (𝑆 ↾ suc ℎ) <s ((𝑈 ↾ dom 𝑆) ↾ suc ℎ))
101	100	ralrimiva 3133	. 2 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → ∀ℎ ∈ dom 𝑆 ¬ (𝑆 ↾ suc ℎ) <s ((𝑈 ↾ dom 𝑆) ↾ suc ℎ))
102		noresle 27683	. 2 ⊢ ((((𝑈 ↾ dom 𝑆) ∈ No ∧ 𝑆 ∈ No ) ∧ (dom (𝑈 ↾ dom 𝑆) ⊆ dom 𝑆 ∧ dom 𝑆 ⊆ dom 𝑆 ∧ ∀ℎ ∈ dom 𝑆 ¬ (𝑆 ↾ suc ℎ) <s ((𝑈 ↾ dom 𝑆) ↾ suc ℎ))) → ¬ 𝑆 <s (𝑈 ↾ dom 𝑆))
103	10, 6, 14, 15, 101, 102	syl23anc 1386	1 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ 𝑈 ∈ 𝐴) → ¬ 𝑆 <s (𝑈 ↾ dom 𝑆))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 208 ∧ wa 397 ∧ w3a 1093 = wceq 1548 ∈ wcel 2121 {cab 2719 ∀wral 3055 ∃wrex 3065 Vcvv 3433 ∪ cun 3883 ∩ cin 3884 ⊆ wss 3885 ifcif 4457 {csn 4558 ⟨cop 4564 class class class wbr 5075 ↦ cmpt 5156 Or wor 5528 dom cdm 5621 ↾ cres 5623 Ord word 6313 Oncon0 6314 suc csuc 6316 ℩cio 6443 ‘cfv 6489 ℩crio 7316 2_oc2o 8393 No csur 27625 <s clts 27626

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-rep 5202 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682

This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-ral 3056 df-rex 3066 df-rmo 3346 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4842 df-int 4881 df-br 5076 df-opab 5138 df-mpt 5157 df-tr 5183 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-ord 6317 df-on 6318 df-suc 6320 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-fo 6495 df-fv 6497 df-riota 7317 df-1o 8399 df-2o 8400 df-no 27628 df-lts 27629 df-bday 27630

This theorem is referenced by: nosupbnd1lem2 27695 nosupbnd1lem6 27699

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