Theorem nosupbnd1lem5 31858

Description: Lemma for nosupbnd1 31860. If 𝑈 is a prolongment of 𝑆 and in 𝐴, then (𝑈‘dom 𝑆) is not 1_𝑜. (Contributed by Scott Fenton, 6-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), 2𝑜⟩}), (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
nosupbnd1lem5	⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → (𝑈‘dom 𝑆) ≠ 1𝑜)

Distinct variable group:   𝐴,𝑔,𝑢,𝑣,𝑥,𝑦

Allowed substitution hints:   𝑆(𝑥,𝑦,𝑣,𝑢,𝑔)   𝑈(𝑥,𝑦,𝑣,𝑢,𝑔)

Proof of Theorem nosupbnd1lem5

Dummy variables 𝑎 𝑝 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		nosupbnd1.1	. . . . . . . 8 ⊢ 𝑆 = if(∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦, ((℩𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦) ∪ {⟨dom (℩𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦), 2𝑜⟩}), (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))))
2	1	nosupno 31849	. . . . . . 7 ⊢ ((𝐴 ⊆ No ∧ 𝐴 ∈ V) → 𝑆 ∈ No )
3	2	3ad2ant2 1083	. . . . . 6 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → 𝑆 ∈ No )
4	3	adantl 482	. . . . 5 ⊢ ((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) → 𝑆 ∈ No )
5		nodmord 31806	. . . . 5 ⊢ (𝑆 ∈ No → Ord dom 𝑆)
6		ordirr 5741	. . . . 5 ⊢ (Ord dom 𝑆 → ¬ dom 𝑆 ∈ dom 𝑆)
7	4, 5, 6	3syl 18	. . . 4 ⊢ ((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) → ¬ dom 𝑆 ∈ dom 𝑆)
8		simpr3l 1122	. . . . . . 7 ⊢ ((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) → 𝑈 ∈ 𝐴)
9	8	adantr 481	. . . . . 6 ⊢ (((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) ∧ (𝑈‘dom 𝑆) = 1𝑜) → 𝑈 ∈ 𝐴)
10		ndmfv 6218	. . . . . . . . 9 ⊢ (¬ dom 𝑆 ∈ dom 𝑈 → (𝑈‘dom 𝑆) = ∅)
11		1on 7567	. . . . . . . . . . . . . 14 ⊢ 1𝑜 ∈ On
12	11	elexi 3213	. . . . . . . . . . . . 13 ⊢ 1𝑜 ∈ V
13	12	prid1 4297	. . . . . . . . . . . 12 ⊢ 1𝑜 ∈ {1𝑜, 2𝑜}
14	13	nosgnn0i 31812	. . . . . . . . . . 11 ⊢ ∅ ≠ 1𝑜
15		neeq1 2856	. . . . . . . . . . 11 ⊢ ((𝑈‘dom 𝑆) = ∅ → ((𝑈‘dom 𝑆) ≠ 1𝑜 ↔ ∅ ≠ 1𝑜))
16	14, 15	mpbiri 248	. . . . . . . . . 10 ⊢ ((𝑈‘dom 𝑆) = ∅ → (𝑈‘dom 𝑆) ≠ 1𝑜)
17	16	neneqd 2799	. . . . . . . . 9 ⊢ ((𝑈‘dom 𝑆) = ∅ → ¬ (𝑈‘dom 𝑆) = 1𝑜)
18	10, 17	syl 17	. . . . . . . 8 ⊢ (¬ dom 𝑆 ∈ dom 𝑈 → ¬ (𝑈‘dom 𝑆) = 1𝑜)
19	18	con4i 113	. . . . . . 7 ⊢ ((𝑈‘dom 𝑆) = 1𝑜 → dom 𝑆 ∈ dom 𝑈)
20	19	adantl 482	. . . . . 6 ⊢ (((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) ∧ (𝑈‘dom 𝑆) = 1𝑜) → dom 𝑆 ∈ dom 𝑈)
21		simp2l 1087	. . . . . . . . . . . . . . . . 17 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → 𝐴 ⊆ No )
22		simp3l 1089	. . . . . . . . . . . . . . . . 17 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → 𝑈 ∈ 𝐴)
23	21, 22	sseldd 3604	. . . . . . . . . . . . . . . 16 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → 𝑈 ∈ No )
24	23	adantr 481	. . . . . . . . . . . . . . 15 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) → 𝑈 ∈ No )
25	24	adantr 481	. . . . . . . . . . . . . 14 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → 𝑈 ∈ No )
26		nofun 31802	. . . . . . . . . . . . . 14 ⊢ (𝑈 ∈ No → Fun 𝑈)
27	25, 26	syl 17	. . . . . . . . . . . . 13 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → Fun 𝑈)
28		simpl2l 1114	. . . . . . . . . . . . . . 15 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) → 𝐴 ⊆ No )
29		simpll 790	. . . . . . . . . . . . . . 15 ⊢ (((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜) → 𝑧 ∈ 𝐴)
30		ssel2 3598	. . . . . . . . . . . . . . 15 ⊢ ((𝐴 ⊆ No ∧ 𝑧 ∈ 𝐴) → 𝑧 ∈ No )
31	28, 29, 30	syl2an 494	. . . . . . . . . . . . . 14 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → 𝑧 ∈ No )
32		nofun 31802	. . . . . . . . . . . . . 14 ⊢ (𝑧 ∈ No → Fun 𝑧)
33	31, 32	syl 17	. . . . . . . . . . . . 13 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → Fun 𝑧)
34		simpl3r 1117	. . . . . . . . . . . . . . 15 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) → (𝑈 ↾ dom 𝑆) = 𝑆)
35	34	adantr 481	. . . . . . . . . . . . . 14 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → (𝑈 ↾ dom 𝑆) = 𝑆)
36		simpll1 1100	. . . . . . . . . . . . . . 15 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → ¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦)
37		simpll2 1101	. . . . . . . . . . . . . . 15 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → (𝐴 ⊆ No ∧ 𝐴 ∈ V))
38		simpll3 1102	. . . . . . . . . . . . . . 15 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))
39		simprl 794	. . . . . . . . . . . . . . 15 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈))
40	1	nosupbnd1lem2 31855	. . . . . . . . . . . . . . 15 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ ((𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈))) → (𝑧 ↾ dom 𝑆) = 𝑆)
41	36, 37, 38, 39, 40	syl112anc 1330	. . . . . . . . . . . . . 14 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → (𝑧 ↾ dom 𝑆) = 𝑆)
42	35, 41	eqtr4d 2659	. . . . . . . . . . . . 13 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → (𝑈 ↾ dom 𝑆) = (𝑧 ↾ dom 𝑆))
43	19	adantl 482	. . . . . . . . . . . . . 14 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) → dom 𝑆 ∈ dom 𝑈)
44	43	adantr 481	. . . . . . . . . . . . 13 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → dom 𝑆 ∈ dom 𝑈)
45		ndmfv 6218	. . . . . . . . . . . . . . . . 17 ⊢ (¬ dom 𝑆 ∈ dom 𝑧 → (𝑧‘dom 𝑆) = ∅)
46		neeq1 2856	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑧‘dom 𝑆) = ∅ → ((𝑧‘dom 𝑆) ≠ 1𝑜 ↔ ∅ ≠ 1𝑜))
47	14, 46	mpbiri 248	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑧‘dom 𝑆) = ∅ → (𝑧‘dom 𝑆) ≠ 1𝑜)
48	47	neneqd 2799	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑧‘dom 𝑆) = ∅ → ¬ (𝑧‘dom 𝑆) = 1𝑜)
49	45, 48	syl 17	. . . . . . . . . . . . . . . 16 ⊢ (¬ dom 𝑆 ∈ dom 𝑧 → ¬ (𝑧‘dom 𝑆) = 1𝑜)
50	49	con4i 113	. . . . . . . . . . . . . . 15 ⊢ ((𝑧‘dom 𝑆) = 1𝑜 → dom 𝑆 ∈ dom 𝑧)
51	50	adantl 482	. . . . . . . . . . . . . 14 ⊢ (((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜) → dom 𝑆 ∈ dom 𝑧)
52	51	adantl 482	. . . . . . . . . . . . 13 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → dom 𝑆 ∈ dom 𝑧)
53		simplr 792	. . . . . . . . . . . . . 14 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → (𝑈‘dom 𝑆) = 1𝑜)
54		simprr 796	. . . . . . . . . . . . . 14 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → (𝑧‘dom 𝑆) = 1𝑜)
55	53, 54	eqtr4d 2659	. . . . . . . . . . . . 13 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → (𝑈‘dom 𝑆) = (𝑧‘dom 𝑆))
56		eqfunressuc 31660	. . . . . . . . . . . . 13 ⊢ (((Fun 𝑈 ∧ Fun 𝑧) ∧ (𝑈 ↾ dom 𝑆) = (𝑧 ↾ dom 𝑆) ∧ (dom 𝑆 ∈ dom 𝑈 ∧ dom 𝑆 ∈ dom 𝑧 ∧ (𝑈‘dom 𝑆) = (𝑧‘dom 𝑆))) → (𝑈 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆))
57	27, 33, 42, 44, 52, 55, 56	syl213anc 1345	. . . . . . . . . . . 12 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ (𝑧‘dom 𝑆) = 1𝑜)) → (𝑈 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆))
58	57	expr 643	. . . . . . . . . . 11 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → ((𝑧‘dom 𝑆) = 1𝑜 → (𝑈 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆)))
59	58	expr 643	. . . . . . . . . 10 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ 𝑧 ∈ 𝐴) → (¬ 𝑧 <s 𝑈 → ((𝑧‘dom 𝑆) = 1𝑜 → (𝑈 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆))))
60	59	a2d 29	. . . . . . . . 9 ⊢ ((((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) ∧ 𝑧 ∈ 𝐴) → ((¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) → (¬ 𝑧 <s 𝑈 → (𝑈 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆))))
61	60	ralimdva 2962	. . . . . . . 8 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜) → (∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) → ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑈 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆))))
62	61	impcom 446	. . . . . . 7 ⊢ ((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = 1𝑜)) → ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑈 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆)))
63	62	anassrs 680	. . . . . 6 ⊢ (((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) ∧ (𝑈‘dom 𝑆) = 1𝑜) → ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑈 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆)))
64		dmeq 5324	. . . . . . . . 9 ⊢ (𝑝 = 𝑈 → dom 𝑝 = dom 𝑈)
65	64	eleq2d 2687	. . . . . . . 8 ⊢ (𝑝 = 𝑈 → (dom 𝑆 ∈ dom 𝑝 ↔ dom 𝑆 ∈ dom 𝑈))
66		breq2 4657	. . . . . . . . . . 11 ⊢ (𝑝 = 𝑈 → (𝑧 <s 𝑝 ↔ 𝑧 <s 𝑈))
67	66	notbid 308	. . . . . . . . . 10 ⊢ (𝑝 = 𝑈 → (¬ 𝑧 <s 𝑝 ↔ ¬ 𝑧 <s 𝑈))
68		reseq1 5390	. . . . . . . . . . 11 ⊢ (𝑝 = 𝑈 → (𝑝 ↾ suc dom 𝑆) = (𝑈 ↾ suc dom 𝑆))
69	68	eqeq1d 2624	. . . . . . . . . 10 ⊢ (𝑝 = 𝑈 → ((𝑝 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆) ↔ (𝑈 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆)))
70	67, 69	imbi12d 334	. . . . . . . . 9 ⊢ (𝑝 = 𝑈 → ((¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆)) ↔ (¬ 𝑧 <s 𝑈 → (𝑈 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆))))
71	70	ralbidv 2986	. . . . . . . 8 ⊢ (𝑝 = 𝑈 → (∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆)) ↔ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑈 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆))))
72	65, 71	anbi12d 747	. . . . . . 7 ⊢ (𝑝 = 𝑈 → ((dom 𝑆 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆))) ↔ (dom 𝑆 ∈ dom 𝑈 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑈 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆)))))
73	72	rspcev 3309	. . . . . 6 ⊢ ((𝑈 ∈ 𝐴 ∧ (dom 𝑆 ∈ dom 𝑈 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑈 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆)))) → ∃𝑝 ∈ 𝐴 (dom 𝑆 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆))))
74	9, 20, 63, 73	syl12anc 1324	. . . . 5 ⊢ (((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) ∧ (𝑈‘dom 𝑆) = 1𝑜) → ∃𝑝 ∈ 𝐴 (dom 𝑆 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆))))
75		simplr1 1103	. . . . . . 7 ⊢ (((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) ∧ (𝑈‘dom 𝑆) = 1𝑜) → ¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦)
76	1	nosupdm 31850	. . . . . . . 8 ⊢ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 → dom 𝑆 = {𝑎 ∣ ∃𝑝 ∈ 𝐴 (𝑎 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc 𝑎) = (𝑧 ↾ suc 𝑎)))})
77	76	eleq2d 2687	. . . . . . 7 ⊢ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 → (dom 𝑆 ∈ dom 𝑆 ↔ dom 𝑆 ∈ {𝑎 ∣ ∃𝑝 ∈ 𝐴 (𝑎 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc 𝑎) = (𝑧 ↾ suc 𝑎)))}))
78	75, 77	syl 17	. . . . . 6 ⊢ (((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) ∧ (𝑈‘dom 𝑆) = 1𝑜) → (dom 𝑆 ∈ dom 𝑆 ↔ dom 𝑆 ∈ {𝑎 ∣ ∃𝑝 ∈ 𝐴 (𝑎 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc 𝑎) = (𝑧 ↾ suc 𝑎)))}))
79	4	adantr 481	. . . . . . 7 ⊢ (((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) ∧ (𝑈‘dom 𝑆) = 1𝑜) → 𝑆 ∈ No )
80		nodmon 31803	. . . . . . 7 ⊢ (𝑆 ∈ No → dom 𝑆 ∈ On)
81		eleq1 2689	. . . . . . . . . 10 ⊢ (𝑎 = dom 𝑆 → (𝑎 ∈ dom 𝑝 ↔ dom 𝑆 ∈ dom 𝑝))
82		suceq 5790	. . . . . . . . . . . . . 14 ⊢ (𝑎 = dom 𝑆 → suc 𝑎 = suc dom 𝑆)
83	82	reseq2d 5396	. . . . . . . . . . . . 13 ⊢ (𝑎 = dom 𝑆 → (𝑝 ↾ suc 𝑎) = (𝑝 ↾ suc dom 𝑆))
84	82	reseq2d 5396	. . . . . . . . . . . . 13 ⊢ (𝑎 = dom 𝑆 → (𝑧 ↾ suc 𝑎) = (𝑧 ↾ suc dom 𝑆))
85	83, 84	eqeq12d 2637	. . . . . . . . . . . 12 ⊢ (𝑎 = dom 𝑆 → ((𝑝 ↾ suc 𝑎) = (𝑧 ↾ suc 𝑎) ↔ (𝑝 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆)))
86	85	imbi2d 330	. . . . . . . . . . 11 ⊢ (𝑎 = dom 𝑆 → ((¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc 𝑎) = (𝑧 ↾ suc 𝑎)) ↔ (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆))))
87	86	ralbidv 2986	. . . . . . . . . 10 ⊢ (𝑎 = dom 𝑆 → (∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc 𝑎) = (𝑧 ↾ suc 𝑎)) ↔ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆))))
88	81, 87	anbi12d 747	. . . . . . . . 9 ⊢ (𝑎 = dom 𝑆 → ((𝑎 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc 𝑎) = (𝑧 ↾ suc 𝑎))) ↔ (dom 𝑆 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆)))))
89	88	rexbidv 3052	. . . . . . . 8 ⊢ (𝑎 = dom 𝑆 → (∃𝑝 ∈ 𝐴 (𝑎 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc 𝑎) = (𝑧 ↾ suc 𝑎))) ↔ ∃𝑝 ∈ 𝐴 (dom 𝑆 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆)))))
90	89	elabg 3351	. . . . . . 7 ⊢ (dom 𝑆 ∈ On → (dom 𝑆 ∈ {𝑎 ∣ ∃𝑝 ∈ 𝐴 (𝑎 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc 𝑎) = (𝑧 ↾ suc 𝑎)))} ↔ ∃𝑝 ∈ 𝐴 (dom 𝑆 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆)))))
91	79, 80, 90	3syl 18	. . . . . 6 ⊢ (((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) ∧ (𝑈‘dom 𝑆) = 1𝑜) → (dom 𝑆 ∈ {𝑎 ∣ ∃𝑝 ∈ 𝐴 (𝑎 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc 𝑎) = (𝑧 ↾ suc 𝑎)))} ↔ ∃𝑝 ∈ 𝐴 (dom 𝑆 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆)))))
92	78, 91	bitrd 268	. . . . 5 ⊢ (((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) ∧ (𝑈‘dom 𝑆) = 1𝑜) → (dom 𝑆 ∈ dom 𝑆 ↔ ∃𝑝 ∈ 𝐴 (dom 𝑆 ∈ dom 𝑝 ∧ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑝 → (𝑝 ↾ suc dom 𝑆) = (𝑧 ↾ suc dom 𝑆)))))
93	74, 92	mpbird 247	. . . 4 ⊢ (((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) ∧ (𝑈‘dom 𝑆) = 1𝑜) → dom 𝑆 ∈ dom 𝑆)
94	7, 93	mtand 691	. . 3 ⊢ ((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) → ¬ (𝑈‘dom 𝑆) = 1𝑜)
95	94	neqned 2801	. 2 ⊢ ((∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) → (𝑈‘dom 𝑆) ≠ 1𝑜)
96		rexanali 2998	. . 3 ⊢ (∃𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 ∧ ¬ (𝑧‘dom 𝑆) = 1𝑜) ↔ ¬ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜))
97		simpl 473	. . . . . . . . . . 11 ⊢ ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) → 𝑧 ∈ 𝐴)
98	21, 97, 30	syl2an 494	. . . . . . . . . 10 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → 𝑧 ∈ No )
99		nofv 31810	. . . . . . . . . 10 ⊢ (𝑧 ∈ No → ((𝑧‘dom 𝑆) = ∅ ∨ (𝑧‘dom 𝑆) = 1𝑜 ∨ (𝑧‘dom 𝑆) = 2𝑜))
100	98, 99	syl 17	. . . . . . . . 9 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → ((𝑧‘dom 𝑆) = ∅ ∨ (𝑧‘dom 𝑆) = 1𝑜 ∨ (𝑧‘dom 𝑆) = 2𝑜))
101		3orel2 31592	. . . . . . . . 9 ⊢ (¬ (𝑧‘dom 𝑆) = 1𝑜 → (((𝑧‘dom 𝑆) = ∅ ∨ (𝑧‘dom 𝑆) = 1𝑜 ∨ (𝑧‘dom 𝑆) = 2𝑜) → ((𝑧‘dom 𝑆) = ∅ ∨ (𝑧‘dom 𝑆) = 2𝑜)))
102	100, 101	syl5com 31	. . . . . . . 8 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → (¬ (𝑧‘dom 𝑆) = 1𝑜 → ((𝑧‘dom 𝑆) = ∅ ∨ (𝑧‘dom 𝑆) = 2𝑜)))
103	102	imdistanda 729	. . . . . . 7 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → (((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ ¬ (𝑧‘dom 𝑆) = 1𝑜) → ((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ ((𝑧‘dom 𝑆) = ∅ ∨ (𝑧‘dom 𝑆) = 2𝑜))))
104		simpl1 1064	. . . . . . . . . . . 12 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → ¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦)
105		simpl2 1065	. . . . . . . . . . . 12 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → (𝐴 ⊆ No ∧ 𝐴 ∈ V))
106		simprl 794	. . . . . . . . . . . 12 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → 𝑧 ∈ 𝐴)
107		simpl3 1066	. . . . . . . . . . . . 13 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))
108		simpr 477	. . . . . . . . . . . . 13 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈))
109	104, 105, 107, 108, 40	syl112anc 1330	. . . . . . . . . . . 12 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → (𝑧 ↾ dom 𝑆) = 𝑆)
110	1	nosupbnd1lem4 31857	. . . . . . . . . . . 12 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑧 ∈ 𝐴 ∧ (𝑧 ↾ dom 𝑆) = 𝑆)) → (𝑧‘dom 𝑆) ≠ ∅)
111	104, 105, 106, 109, 110	syl112anc 1330	. . . . . . . . . . 11 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → (𝑧‘dom 𝑆) ≠ ∅)
112	111	neneqd 2799	. . . . . . . . . 10 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → ¬ (𝑧‘dom 𝑆) = ∅)
113	112	pm2.21d 118	. . . . . . . . 9 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → ((𝑧‘dom 𝑆) = ∅ → (𝑈‘dom 𝑆) ≠ 1𝑜))
114	1	nosupbnd1lem3 31856	. . . . . . . . . . . 12 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑧 ∈ 𝐴 ∧ (𝑧 ↾ dom 𝑆) = 𝑆)) → (𝑧‘dom 𝑆) ≠ 2𝑜)
115	104, 105, 106, 109, 114	syl112anc 1330	. . . . . . . . . . 11 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → (𝑧‘dom 𝑆) ≠ 2𝑜)
116	115	neneqd 2799	. . . . . . . . . 10 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → ¬ (𝑧‘dom 𝑆) = 2𝑜)
117	116	pm2.21d 118	. . . . . . . . 9 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → ((𝑧‘dom 𝑆) = 2𝑜 → (𝑈‘dom 𝑆) ≠ 1𝑜))
118	113, 117	jaod 395	. . . . . . . 8 ⊢ (((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈)) → (((𝑧‘dom 𝑆) = ∅ ∨ (𝑧‘dom 𝑆) = 2𝑜) → (𝑈‘dom 𝑆) ≠ 1𝑜))
119	118	expimpd 629	. . . . . . 7 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → (((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ ((𝑧‘dom 𝑆) = ∅ ∨ (𝑧‘dom 𝑆) = 2𝑜)) → (𝑈‘dom 𝑆) ≠ 1𝑜))
120	103, 119	syldc 48	. . . . . 6 ⊢ (((𝑧 ∈ 𝐴 ∧ ¬ 𝑧 <s 𝑈) ∧ ¬ (𝑧‘dom 𝑆) = 1𝑜) → ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → (𝑈‘dom 𝑆) ≠ 1𝑜))
121	120	anasss 679	. . . . 5 ⊢ ((𝑧 ∈ 𝐴 ∧ (¬ 𝑧 <s 𝑈 ∧ ¬ (𝑧‘dom 𝑆) = 1𝑜)) → ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → (𝑈‘dom 𝑆) ≠ 1𝑜))
122	121	rexlimiva 3028	. . . 4 ⊢ (∃𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 ∧ ¬ (𝑧‘dom 𝑆) = 1𝑜) → ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → (𝑈‘dom 𝑆) ≠ 1𝑜))
123	122	imp 445	. . 3 ⊢ ((∃𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 ∧ ¬ (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) → (𝑈‘dom 𝑆) ≠ 1𝑜)
124	96, 123	sylanbr 490	. 2 ⊢ ((¬ ∀𝑧 ∈ 𝐴 (¬ 𝑧 <s 𝑈 → (𝑧‘dom 𝑆) = 1𝑜) ∧ (¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))) → (𝑈‘dom 𝑆) ≠ 1𝑜)
125	95, 124	pm2.61ian 831	1 ⊢ ((¬ ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 ⊆ No ∧ 𝐴 ∈ V) ∧ (𝑈 ∈ 𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → (𝑈‘dom 𝑆) ≠ 1𝑜)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 196   ∨ wo 383   ∧ wa 384   ∨ w3o 1036   ∧ w3a 1037   = wceq 1483   ∈ wcel 1990  {cab 2608   ≠ wne 2794  ∀wral 2912  ∃wrex 2913  Vcvv 3200   ∪ cun 3572   ⊆ wss 3574  ∅c0 3915  ifcif 4086  {csn 4177  ⟨cop 4183   class class class wbr 4653   ↦ cmpt 4729  dom cdm 5114   ↾ cres 5116  Ord word 5722  Oncon0 5723  suc csuc 5725  ℩cio 5849  Fun wfun 5882  ‘cfv 5888  ℩crio 6610  1_𝑜c1o 7553  2_𝑜c2o 7554   No csur 31793   <s cslt 31794

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-int 4476  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-ord 5726  df-on 5727  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-1o 7560  df-2o 7561  df-no 31796  df-slt 31797  df-bday 31798

This theorem is referenced by:  nosupbnd1lem6  31859