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Theorem nosupbnd1lem4 31982
Description: Lemma for nosupbnd1 31985. If 𝑈 is a prolongment of 𝑆 and in 𝐴, then (𝑈‘dom 𝑆) is not undefined. (Contributed by Scott Fenton, 6-Dec-2021.)
Hypothesis
Ref Expression
nosupbnd1.1 𝑆 = if(∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦, ((𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦) ∪ {⟨dom (𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦), 2𝑜⟩}), (𝑔 ∈ {𝑦 ∣ ∃𝑢𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣𝐴𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥𝑢𝐴 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣𝐴𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢𝑔) = 𝑥))))
Assertion
Ref Expression
nosupbnd1lem4 ((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → (𝑈‘dom 𝑆) ≠ ∅)
Distinct variable groups:   𝐴,𝑔,𝑢,𝑣,𝑥,𝑦   𝑢,𝑈   𝑣,𝑢,𝑥,𝑦
Allowed substitution hints:   𝑆(𝑥,𝑦,𝑣,𝑢,𝑔)   𝑈(𝑥,𝑦,𝑣,𝑔)

Proof of Theorem nosupbnd1lem4
Dummy variable 𝑤 is distinct from all other variables.
StepHypRef Expression
1 simpl1 1084 . . . . . . . 8 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑤𝐴𝑈 <s 𝑤)) → ¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦)
2 simpl2 1085 . . . . . . . 8 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝐴 No 𝐴 ∈ V))
3 simprl 809 . . . . . . . 8 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑤𝐴𝑈 <s 𝑤)) → 𝑤𝐴)
4 simpl3 1086 . . . . . . . . 9 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))
5 simprr 811 . . . . . . . . . . 11 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑤𝐴𝑈 <s 𝑤)) → 𝑈 <s 𝑤)
6 simp2l 1107 . . . . . . . . . . . . 13 ((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → 𝐴 No )
7 simp3l 1109 . . . . . . . . . . . . 13 ((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → 𝑈𝐴)
86, 7sseldd 3637 . . . . . . . . . . . 12 ((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → 𝑈 No )
9 simpl2l 1134 . . . . . . . . . . . . 13 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑤𝐴𝑈 <s 𝑤)) → 𝐴 No )
109, 3sseldd 3637 . . . . . . . . . . . 12 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑤𝐴𝑈 <s 𝑤)) → 𝑤 No )
11 sltso 31952 . . . . . . . . . . . . 13 <s Or No
12 soasym 31783 . . . . . . . . . . . . 13 (( <s Or No ∧ (𝑈 No 𝑤 No )) → (𝑈 <s 𝑤 → ¬ 𝑤 <s 𝑈))
1311, 12mpan 706 . . . . . . . . . . . 12 ((𝑈 No 𝑤 No ) → (𝑈 <s 𝑤 → ¬ 𝑤 <s 𝑈))
148, 10, 13syl2an2r 893 . . . . . . . . . . 11 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝑈 <s 𝑤 → ¬ 𝑤 <s 𝑈))
155, 14mpd 15 . . . . . . . . . 10 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑤𝐴𝑈 <s 𝑤)) → ¬ 𝑤 <s 𝑈)
163, 15jca 553 . . . . . . . . 9 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝑤𝐴 ∧ ¬ 𝑤 <s 𝑈))
17 nosupbnd1.1 . . . . . . . . . 10 𝑆 = if(∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦, ((𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦) ∪ {⟨dom (𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦), 2𝑜⟩}), (𝑔 ∈ {𝑦 ∣ ∃𝑢𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣𝐴𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥𝑢𝐴 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣𝐴𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢𝑔) = 𝑥))))
1817nosupbnd1lem2 31980 . . . . . . . . 9 ((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ ((𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆) ∧ (𝑤𝐴 ∧ ¬ 𝑤 <s 𝑈))) → (𝑤 ↾ dom 𝑆) = 𝑆)
191, 2, 4, 16, 18syl112anc 1370 . . . . . . . 8 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝑤 ↾ dom 𝑆) = 𝑆)
2017nosupbnd1lem3 31981 . . . . . . . 8 ((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑤𝐴 ∧ (𝑤 ↾ dom 𝑆) = 𝑆)) → (𝑤‘dom 𝑆) ≠ 2𝑜)
211, 2, 3, 19, 20syl112anc 1370 . . . . . . 7 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝑤‘dom 𝑆) ≠ 2𝑜)
2221neneqd 2828 . . . . . 6 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑤𝐴𝑈 <s 𝑤)) → ¬ (𝑤‘dom 𝑆) = 2𝑜)
2322expr 642 . . . . 5 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ 𝑤𝐴) → (𝑈 <s 𝑤 → ¬ (𝑤‘dom 𝑆) = 2𝑜))
24 imnan 437 . . . . 5 ((𝑈 <s 𝑤 → ¬ (𝑤‘dom 𝑆) = 2𝑜) ↔ ¬ (𝑈 <s 𝑤 ∧ (𝑤‘dom 𝑆) = 2𝑜))
2523, 24sylib 208 . . . 4 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ 𝑤𝐴) → ¬ (𝑈 <s 𝑤 ∧ (𝑤‘dom 𝑆) = 2𝑜))
2625nrexdv 3030 . . 3 ((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → ¬ ∃𝑤𝐴 (𝑈 <s 𝑤 ∧ (𝑤‘dom 𝑆) = 2𝑜))
27 simpl3l 1136 . . . . 5 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) → 𝑈𝐴)
28 simpl1 1084 . . . . . 6 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) → ¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦)
29 breq2 4689 . . . . . . . . . 10 (𝑤 = 𝑦 → (𝑢 <s 𝑤𝑢 <s 𝑦))
3029cbvrexv 3202 . . . . . . . . 9 (∃𝑤𝐴 𝑢 <s 𝑤 ↔ ∃𝑦𝐴 𝑢 <s 𝑦)
31 breq1 4688 . . . . . . . . . 10 (𝑢 = 𝑥 → (𝑢 <s 𝑦𝑥 <s 𝑦))
3231rexbidv 3081 . . . . . . . . 9 (𝑢 = 𝑥 → (∃𝑦𝐴 𝑢 <s 𝑦 ↔ ∃𝑦𝐴 𝑥 <s 𝑦))
3330, 32syl5bb 272 . . . . . . . 8 (𝑢 = 𝑥 → (∃𝑤𝐴 𝑢 <s 𝑤 ↔ ∃𝑦𝐴 𝑥 <s 𝑦))
3433cbvralv 3201 . . . . . . 7 (∀𝑢𝐴𝑤𝐴 𝑢 <s 𝑤 ↔ ∀𝑥𝐴𝑦𝐴 𝑥 <s 𝑦)
35 dfrex2 3025 . . . . . . . 8 (∃𝑦𝐴 𝑥 <s 𝑦 ↔ ¬ ∀𝑦𝐴 ¬ 𝑥 <s 𝑦)
3635ralbii 3009 . . . . . . 7 (∀𝑥𝐴𝑦𝐴 𝑥 <s 𝑦 ↔ ∀𝑥𝐴 ¬ ∀𝑦𝐴 ¬ 𝑥 <s 𝑦)
37 ralnex 3021 . . . . . . 7 (∀𝑥𝐴 ¬ ∀𝑦𝐴 ¬ 𝑥 <s 𝑦 ↔ ¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦)
3834, 36, 373bitri 286 . . . . . 6 (∀𝑢𝐴𝑤𝐴 𝑢 <s 𝑤 ↔ ¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦)
3928, 38sylibr 224 . . . . 5 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) → ∀𝑢𝐴𝑤𝐴 𝑢 <s 𝑤)
40 breq1 4688 . . . . . . 7 (𝑢 = 𝑈 → (𝑢 <s 𝑤𝑈 <s 𝑤))
4140rexbidv 3081 . . . . . 6 (𝑢 = 𝑈 → (∃𝑤𝐴 𝑢 <s 𝑤 ↔ ∃𝑤𝐴 𝑈 <s 𝑤))
4241rspcv 3336 . . . . 5 (𝑈𝐴 → (∀𝑢𝐴𝑤𝐴 𝑢 <s 𝑤 → ∃𝑤𝐴 𝑈 <s 𝑤))
4327, 39, 42sylc 65 . . . 4 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) → ∃𝑤𝐴 𝑈 <s 𝑤)
44 simpl2l 1134 . . . . . . . . . 10 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) → 𝐴 No )
4544, 27sseldd 3637 . . . . . . . . 9 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) → 𝑈 No )
4645adantr 480 . . . . . . . 8 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → 𝑈 No )
4744adantr 480 . . . . . . . . 9 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → 𝐴 No )
48 simprl 809 . . . . . . . . 9 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → 𝑤𝐴)
4947, 48sseldd 3637 . . . . . . . 8 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → 𝑤 No )
5017nosupno 31974 . . . . . . . . . . . 12 ((𝐴 No 𝐴 ∈ V) → 𝑆 No )
51503ad2ant2 1103 . . . . . . . . . . 11 ((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → 𝑆 No )
5251adantr 480 . . . . . . . . . 10 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) → 𝑆 No )
5352adantr 480 . . . . . . . . 9 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → 𝑆 No )
54 nodmon 31928 . . . . . . . . 9 (𝑆 No → dom 𝑆 ∈ On)
5553, 54syl 17 . . . . . . . 8 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → dom 𝑆 ∈ On)
56 simpl3r 1137 . . . . . . . . . 10 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) → (𝑈 ↾ dom 𝑆) = 𝑆)
5756adantr 480 . . . . . . . . 9 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝑈 ↾ dom 𝑆) = 𝑆)
58 simpll1 1120 . . . . . . . . . 10 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → ¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦)
59 simpll2 1121 . . . . . . . . . 10 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝐴 No 𝐴 ∈ V))
60 simpll3 1122 . . . . . . . . . 10 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆))
61 simprr 811 . . . . . . . . . . . 12 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → 𝑈 <s 𝑤)
6245, 49, 13syl2an2r 893 . . . . . . . . . . . 12 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝑈 <s 𝑤 → ¬ 𝑤 <s 𝑈))
6361, 62mpd 15 . . . . . . . . . . 11 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → ¬ 𝑤 <s 𝑈)
6448, 63jca 553 . . . . . . . . . 10 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝑤𝐴 ∧ ¬ 𝑤 <s 𝑈))
6558, 59, 60, 64, 18syl112anc 1370 . . . . . . . . 9 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝑤 ↾ dom 𝑆) = 𝑆)
6657, 65eqtr4d 2688 . . . . . . . 8 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝑈 ↾ dom 𝑆) = (𝑤 ↾ dom 𝑆))
67 simplr 807 . . . . . . . 8 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝑈‘dom 𝑆) = ∅)
68 nolt02o 31970 . . . . . . . 8 (((𝑈 No 𝑤 No ∧ dom 𝑆 ∈ On) ∧ ((𝑈 ↾ dom 𝑆) = (𝑤 ↾ dom 𝑆) ∧ 𝑈 <s 𝑤) ∧ (𝑈‘dom 𝑆) = ∅) → (𝑤‘dom 𝑆) = 2𝑜)
6946, 49, 55, 66, 61, 67, 68syl321anc 1388 . . . . . . 7 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ (𝑤𝐴𝑈 <s 𝑤)) → (𝑤‘dom 𝑆) = 2𝑜)
7069expr 642 . . . . . 6 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ 𝑤𝐴) → (𝑈 <s 𝑤 → (𝑤‘dom 𝑆) = 2𝑜))
7170ancld 575 . . . . 5 ((((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) ∧ 𝑤𝐴) → (𝑈 <s 𝑤 → (𝑈 <s 𝑤 ∧ (𝑤‘dom 𝑆) = 2𝑜)))
7271reximdva 3046 . . . 4 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) → (∃𝑤𝐴 𝑈 <s 𝑤 → ∃𝑤𝐴 (𝑈 <s 𝑤 ∧ (𝑤‘dom 𝑆) = 2𝑜)))
7343, 72mpd 15 . . 3 (((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) ∧ (𝑈‘dom 𝑆) = ∅) → ∃𝑤𝐴 (𝑈 <s 𝑤 ∧ (𝑤‘dom 𝑆) = 2𝑜))
7426, 73mtand 692 . 2 ((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → ¬ (𝑈‘dom 𝑆) = ∅)
7574neqned 2830 1 ((¬ ∃𝑥𝐴𝑦𝐴 ¬ 𝑥 <s 𝑦 ∧ (𝐴 No 𝐴 ∈ V) ∧ (𝑈𝐴 ∧ (𝑈 ↾ dom 𝑆) = 𝑆)) → (𝑈‘dom 𝑆) ≠ ∅)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 383  w3a 1054   = wceq 1523  wcel 2030  {cab 2637  wne 2823  wral 2941  wrex 2942  Vcvv 3231  cun 3605  wss 3607  c0 3948  ifcif 4119  {csn 4210  cop 4216   class class class wbr 4685  cmpt 4762   Or wor 5063  dom cdm 5143  cres 5145  Oncon0 5761  suc csuc 5763  cio 5887  cfv 5926  crio 6650  2𝑜c2o 7599   No csur 31918   <s cslt 31919
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-8 2032  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631  ax-rep 4804  ax-sep 4814  ax-nul 4822  ax-pow 4873  ax-pr 4936  ax-un 6991
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1055  df-3an 1056  df-tru 1526  df-ex 1745  df-nf 1750  df-sb 1938  df-eu 2502  df-mo 2503  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-ne 2824  df-ral 2946  df-rex 2947  df-reu 2948  df-rmo 2949  df-rab 2950  df-v 3233  df-sbc 3469  df-csb 3567  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-pss 3623  df-nul 3949  df-if 4120  df-pw 4193  df-sn 4211  df-pr 4213  df-tp 4215  df-op 4217  df-uni 4469  df-int 4508  df-iun 4554  df-br 4686  df-opab 4746  df-mpt 4763  df-tr 4786  df-id 5053  df-eprel 5058  df-po 5064  df-so 5065  df-fr 5102  df-we 5104  df-xp 5149  df-rel 5150  df-cnv 5151  df-co 5152  df-dm 5153  df-rn 5154  df-res 5155  df-ima 5156  df-ord 5764  df-on 5765  df-suc 5767  df-iota 5889  df-fun 5928  df-fn 5929  df-f 5930  df-f1 5931  df-fo 5932  df-f1o 5933  df-fv 5934  df-riota 6651  df-1o 7605  df-2o 7606  df-no 31921  df-slt 31922  df-bday 31923
This theorem is referenced by:  nosupbnd1lem5  31983  nosupbnd1lem6  31984
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