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Theorem nolt02o 33102
Description: Given 𝐴 less than 𝐵, equal to 𝐵 up to 𝑋, and undefined at 𝑋, then 𝐵(𝑋) = 2o. (Contributed by Scott Fenton, 6-Dec-2021.)
Assertion
Ref Expression
nolt02o (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → (𝐵𝑋) = 2o)

Proof of Theorem nolt02o
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 simp11 1197 . . . . 5 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → 𝐴 No )
2 sltso 33084 . . . . . 6 <s Or No
3 sonr 5495 . . . . . 6 (( <s Or No 𝐴 No ) → ¬ 𝐴 <s 𝐴)
42, 3mpan 686 . . . . 5 (𝐴 No → ¬ 𝐴 <s 𝐴)
51, 4syl 17 . . . 4 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → ¬ 𝐴 <s 𝐴)
6 simp2r 1194 . . . . 5 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → 𝐴 <s 𝐵)
7 breq2 5067 . . . . 5 (𝐴 = 𝐵 → (𝐴 <s 𝐴𝐴 <s 𝐵))
86, 7syl5ibrcom 248 . . . 4 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → (𝐴 = 𝐵𝐴 <s 𝐴))
95, 8mtod 199 . . 3 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → ¬ 𝐴 = 𝐵)
10 simpl2l 1220 . . . 4 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = ∅) → (𝐴𝑋) = (𝐵𝑋))
11 simpl11 1242 . . . . . 6 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = ∅) → 𝐴 No )
12 nofun 33059 . . . . . 6 (𝐴 No → Fun 𝐴)
13 funrel 6371 . . . . . 6 (Fun 𝐴 → Rel 𝐴)
1411, 12, 133syl 18 . . . . 5 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = ∅) → Rel 𝐴)
15 simpl13 1244 . . . . . 6 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = ∅) → 𝑋 ∈ On)
16 simpl3 1187 . . . . . 6 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = ∅) → (𝐴𝑋) = ∅)
17 nolt02olem 33101 . . . . . 6 ((𝐴 No 𝑋 ∈ On ∧ (𝐴𝑋) = ∅) → dom 𝐴𝑋)
1811, 15, 16, 17syl3anc 1365 . . . . 5 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = ∅) → dom 𝐴𝑋)
19 relssres 5892 . . . . 5 ((Rel 𝐴 ∧ dom 𝐴𝑋) → (𝐴𝑋) = 𝐴)
2014, 18, 19syl2anc 584 . . . 4 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = ∅) → (𝐴𝑋) = 𝐴)
21 simpl12 1243 . . . . . 6 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = ∅) → 𝐵 No )
22 nofun 33059 . . . . . 6 (𝐵 No → Fun 𝐵)
23 funrel 6371 . . . . . 6 (Fun 𝐵 → Rel 𝐵)
2421, 22, 233syl 18 . . . . 5 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = ∅) → Rel 𝐵)
25 simpr 485 . . . . . 6 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = ∅) → (𝐵𝑋) = ∅)
26 nolt02olem 33101 . . . . . 6 ((𝐵 No 𝑋 ∈ On ∧ (𝐵𝑋) = ∅) → dom 𝐵𝑋)
2721, 15, 25, 26syl3anc 1365 . . . . 5 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = ∅) → dom 𝐵𝑋)
28 relssres 5892 . . . . 5 ((Rel 𝐵 ∧ dom 𝐵𝑋) → (𝐵𝑋) = 𝐵)
2924, 27, 28syl2anc 584 . . . 4 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = ∅) → (𝐵𝑋) = 𝐵)
3010, 20, 293eqtr3d 2869 . . 3 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = ∅) → 𝐴 = 𝐵)
319, 30mtand 812 . 2 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → ¬ (𝐵𝑋) = ∅)
32 simp12 1198 . . . . . 6 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → 𝐵 No )
33 sltval 33057 . . . . . 6 ((𝐴 No 𝐵 No ) → (𝐴 <s 𝐵 ↔ ∃𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) ∧ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥))))
341, 32, 33syl2anc 584 . . . . 5 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → (𝐴 <s 𝐵 ↔ ∃𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) ∧ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥))))
356, 34mpbid 233 . . . 4 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → ∃𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) ∧ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
36 df-an 397 . . . . . 6 ((∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) ∧ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)) ↔ ¬ (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
3736rexbii 3252 . . . . 5 (∃𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) ∧ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)) ↔ ∃𝑥 ∈ On ¬ (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
38 rexnal 3243 . . . . 5 (∃𝑥 ∈ On ¬ (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)) ↔ ¬ ∀𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
3937, 38bitri 276 . . . 4 (∃𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) ∧ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)) ↔ ¬ ∀𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
4035, 39sylib 219 . . 3 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → ¬ ∀𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
41 1oex 8106 . . . . . . . . . . . 12 1o ∈ V
4241prid1 4697 . . . . . . . . . . 11 1o ∈ {1o, 2o}
4342nosgnn0i 33069 . . . . . . . . . 10 ∅ ≠ 1o
4443neii 3023 . . . . . . . . 9 ¬ ∅ = 1o
45 simpll3 1208 . . . . . . . . . 10 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝐴𝑋) = ∅)
46 simplr 765 . . . . . . . . . 10 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝐵𝑋) = 1o)
47 eqeq1 2830 . . . . . . . . . . . . 13 ((𝐴𝑋) = (𝐵𝑋) → ((𝐴𝑋) = ∅ ↔ (𝐵𝑋) = ∅))
4847anbi1d 629 . . . . . . . . . . . 12 ((𝐴𝑋) = (𝐵𝑋) → (((𝐴𝑋) = ∅ ∧ (𝐵𝑋) = 1o) ↔ ((𝐵𝑋) = ∅ ∧ (𝐵𝑋) = 1o)))
49 eqtr2 2847 . . . . . . . . . . . 12 (((𝐵𝑋) = ∅ ∧ (𝐵𝑋) = 1o) → ∅ = 1o)
5048, 49syl6bi 254 . . . . . . . . . . 11 ((𝐴𝑋) = (𝐵𝑋) → (((𝐴𝑋) = ∅ ∧ (𝐵𝑋) = 1o) → ∅ = 1o))
5150com12 32 . . . . . . . . . 10 (((𝐴𝑋) = ∅ ∧ (𝐵𝑋) = 1o) → ((𝐴𝑋) = (𝐵𝑋) → ∅ = 1o))
5245, 46, 51syl2anc 584 . . . . . . . . 9 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ((𝐴𝑋) = (𝐵𝑋) → ∅ = 1o))
5344, 52mtoi 200 . . . . . . . 8 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ¬ (𝐴𝑋) = (𝐵𝑋))
54 simpr 485 . . . . . . . . 9 ((((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) ∧ 𝑋𝑥) → 𝑋𝑥)
55 simplrr 774 . . . . . . . . 9 ((((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) ∧ 𝑋𝑥) → ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))
56 fveq2 6669 . . . . . . . . . . 11 (𝑦 = 𝑋 → (𝐴𝑦) = (𝐴𝑋))
57 fveq2 6669 . . . . . . . . . . 11 (𝑦 = 𝑋 → (𝐵𝑦) = (𝐵𝑋))
5856, 57eqeq12d 2842 . . . . . . . . . 10 (𝑦 = 𝑋 → ((𝐴𝑦) = (𝐵𝑦) ↔ (𝐴𝑋) = (𝐵𝑋)))
5958rspcv 3622 . . . . . . . . 9 (𝑋𝑥 → (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → (𝐴𝑋) = (𝐵𝑋)))
6054, 55, 59sylc 65 . . . . . . . 8 ((((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) ∧ 𝑋𝑥) → (𝐴𝑋) = (𝐵𝑋))
6153, 60mtand 812 . . . . . . 7 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ¬ 𝑋𝑥)
62 simprl 767 . . . . . . . 8 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → 𝑥 ∈ On)
63 simpl13 1244 . . . . . . . . 9 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) → 𝑋 ∈ On)
6463adantr 481 . . . . . . . 8 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → 𝑋 ∈ On)
65 ontri1 6224 . . . . . . . 8 ((𝑥 ∈ On ∧ 𝑋 ∈ On) → (𝑥𝑋 ↔ ¬ 𝑋𝑥))
6662, 64, 65syl2anc 584 . . . . . . 7 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝑥𝑋 ↔ ¬ 𝑋𝑥))
6761, 66mpbird 258 . . . . . 6 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → 𝑥𝑋)
68 onsseleq 6231 . . . . . . . 8 ((𝑥 ∈ On ∧ 𝑋 ∈ On) → (𝑥𝑋 ↔ (𝑥𝑋𝑥 = 𝑋)))
6962, 64, 68syl2anc 584 . . . . . . 7 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝑥𝑋 ↔ (𝑥𝑋𝑥 = 𝑋)))
70 eqtr2 2847 . . . . . . . . . . . . . 14 ((((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 1o) → ∅ = 1o)
7170ancoms 459 . . . . . . . . . . . . 13 ((((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = ∅) → ∅ = 1o)
7244, 71mto 198 . . . . . . . . . . . 12 ¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = ∅)
73 df-1o 8098 . . . . . . . . . . . . . . . 16 1o = suc ∅
74 df-2o 8099 . . . . . . . . . . . . . . . 16 2o = suc 1o
7573, 74eqeq12i 2841 . . . . . . . . . . . . . . 15 (1o = 2o ↔ suc ∅ = suc 1o)
76 0elon 6243 . . . . . . . . . . . . . . . 16 ∅ ∈ On
77 1on 8105 . . . . . . . . . . . . . . . 16 1o ∈ On
78 suc11 6293 . . . . . . . . . . . . . . . 16 ((∅ ∈ On ∧ 1o ∈ On) → (suc ∅ = suc 1o ↔ ∅ = 1o))
7976, 77, 78mp2an 688 . . . . . . . . . . . . . . 15 (suc ∅ = suc 1o ↔ ∅ = 1o)
8075, 79bitri 276 . . . . . . . . . . . . . 14 (1o = 2o ↔ ∅ = 1o)
8143, 80nemtbir 3117 . . . . . . . . . . . . 13 ¬ 1o = 2o
82 eqtr2 2847 . . . . . . . . . . . . 13 ((((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = 2o) → 1o = 2o)
8381, 82mto 198 . . . . . . . . . . . 12 ¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = 2o)
84 2on 8107 . . . . . . . . . . . . . . . . 17 2o ∈ On
8584elexi 3519 . . . . . . . . . . . . . . . 16 2o ∈ V
8685prid2 4698 . . . . . . . . . . . . . . 15 2o ∈ {1o, 2o}
8786nosgnn0i 33069 . . . . . . . . . . . . . 14 ∅ ≠ 2o
8887neii 3023 . . . . . . . . . . . . 13 ¬ ∅ = 2o
89 eqtr2 2847 . . . . . . . . . . . . 13 ((((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 2o) → ∅ = 2o)
9088, 89mto 198 . . . . . . . . . . . 12 ¬ (((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 2o)
9172, 83, 903pm3.2i 1333 . . . . . . . . . . 11 (¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = ∅) ∧ ¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = 2o) ∧ ¬ (((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 2o))
92 fvex 6682 . . . . . . . . . . . . . 14 ((𝐴𝑋)‘𝑥) ∈ V
9392, 92brtp 32888 . . . . . . . . . . . . 13 (((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐴𝑋)‘𝑥) ↔ ((((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = ∅) ∨ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = 2o) ∨ (((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 2o)))
94 3oran 1103 . . . . . . . . . . . . 13 (((((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = ∅) ∨ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = 2o) ∨ (((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 2o)) ↔ ¬ (¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = ∅) ∧ ¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = 2o) ∧ ¬ (((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 2o)))
9593, 94bitri 276 . . . . . . . . . . . 12 (((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐴𝑋)‘𝑥) ↔ ¬ (¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = ∅) ∧ ¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = 2o) ∧ ¬ (((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 2o)))
9695con2bii 359 . . . . . . . . . . 11 ((¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = ∅) ∧ ¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = 2o) ∧ ¬ (((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 2o)) ↔ ¬ ((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐴𝑋)‘𝑥))
9791, 96mpbi 231 . . . . . . . . . 10 ¬ ((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐴𝑋)‘𝑥)
98 simpl2l 1220 . . . . . . . . . . . . 13 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) → (𝐴𝑋) = (𝐵𝑋))
9998adantr 481 . . . . . . . . . . . 12 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝐴𝑋) = (𝐵𝑋))
10099fveq1d 6671 . . . . . . . . . . 11 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ((𝐴𝑋)‘𝑥) = ((𝐵𝑋)‘𝑥))
101100breq2d 5075 . . . . . . . . . 10 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐴𝑋)‘𝑥) ↔ ((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐵𝑋)‘𝑥)))
10297, 101mtbii 327 . . . . . . . . 9 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ¬ ((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐵𝑋)‘𝑥))
103 fvres 6688 . . . . . . . . . . 11 (𝑥𝑋 → ((𝐴𝑋)‘𝑥) = (𝐴𝑥))
104 fvres 6688 . . . . . . . . . . 11 (𝑥𝑋 → ((𝐵𝑋)‘𝑥) = (𝐵𝑥))
105103, 104breq12d 5076 . . . . . . . . . 10 (𝑥𝑋 → (((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐵𝑋)‘𝑥) ↔ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
106105notbid 319 . . . . . . . . 9 (𝑥𝑋 → (¬ ((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐵𝑋)‘𝑥) ↔ ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
107102, 106syl5ibcom 246 . . . . . . . 8 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝑥𝑋 → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
10844intnanr 488 . . . . . . . . . . . 12 ¬ (∅ = 1o ∧ 1o = ∅)
10944intnanr 488 . . . . . . . . . . . 12 ¬ (∅ = 1o ∧ 1o = 2o)
11081intnan 487 . . . . . . . . . . . 12 ¬ (∅ = ∅ ∧ 1o = 2o)
111108, 109, 1103pm3.2i 1333 . . . . . . . . . . 11 (¬ (∅ = 1o ∧ 1o = ∅) ∧ ¬ (∅ = 1o ∧ 1o = 2o) ∧ ¬ (∅ = ∅ ∧ 1o = 2o))
112 0ex 5208 . . . . . . . . . . . . . 14 ∅ ∈ V
113112, 41brtp 32888 . . . . . . . . . . . . 13 (∅{⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩}1o ↔ ((∅ = 1o ∧ 1o = ∅) ∨ (∅ = 1o ∧ 1o = 2o) ∨ (∅ = ∅ ∧ 1o = 2o)))
114 3oran 1103 . . . . . . . . . . . . 13 (((∅ = 1o ∧ 1o = ∅) ∨ (∅ = 1o ∧ 1o = 2o) ∨ (∅ = ∅ ∧ 1o = 2o)) ↔ ¬ (¬ (∅ = 1o ∧ 1o = ∅) ∧ ¬ (∅ = 1o ∧ 1o = 2o) ∧ ¬ (∅ = ∅ ∧ 1o = 2o)))
115113, 114bitri 276 . . . . . . . . . . . 12 (∅{⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩}1o ↔ ¬ (¬ (∅ = 1o ∧ 1o = ∅) ∧ ¬ (∅ = 1o ∧ 1o = 2o) ∧ ¬ (∅ = ∅ ∧ 1o = 2o)))
116115con2bii 359 . . . . . . . . . . 11 ((¬ (∅ = 1o ∧ 1o = ∅) ∧ ¬ (∅ = 1o ∧ 1o = 2o) ∧ ¬ (∅ = ∅ ∧ 1o = 2o)) ↔ ¬ ∅{⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩}1o)
117111, 116mpbi 231 . . . . . . . . . 10 ¬ ∅{⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩}1o
11845, 46breq12d 5076 . . . . . . . . . 10 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ((𝐴𝑋){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑋) ↔ ∅{⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩}1o))
119117, 118mtbiri 328 . . . . . . . . 9 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ¬ (𝐴𝑋){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑋))
120 fveq2 6669 . . . . . . . . . . 11 (𝑥 = 𝑋 → (𝐴𝑥) = (𝐴𝑋))
121 fveq2 6669 . . . . . . . . . . 11 (𝑥 = 𝑋 → (𝐵𝑥) = (𝐵𝑋))
122120, 121breq12d 5076 . . . . . . . . . 10 (𝑥 = 𝑋 → ((𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥) ↔ (𝐴𝑋){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑋)))
123122notbid 319 . . . . . . . . 9 (𝑥 = 𝑋 → (¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥) ↔ ¬ (𝐴𝑋){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑋)))
124119, 123syl5ibrcom 248 . . . . . . . 8 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝑥 = 𝑋 → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
125107, 124jaod 855 . . . . . . 7 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ((𝑥𝑋𝑥 = 𝑋) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
12669, 125sylbid 241 . . . . . 6 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝑥𝑋 → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
12767, 126mpd 15 . . . . 5 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥))
128127expr 457 . . . 4 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) ∧ 𝑥 ∈ On) → (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
129128ralrimiva 3187 . . 3 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) ∧ (𝐵𝑋) = 1o) → ∀𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
13040, 129mtand 812 . 2 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → ¬ (𝐵𝑋) = 1o)
131 nofv 33067 . . . 4 (𝐵 No → ((𝐵𝑋) = ∅ ∨ (𝐵𝑋) = 1o ∨ (𝐵𝑋) = 2o))
13232, 131syl 17 . . 3 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → ((𝐵𝑋) = ∅ ∨ (𝐵𝑋) = 1o ∨ (𝐵𝑋) = 2o))
133 3orrot 1086 . . . 4 (((𝐵𝑋) = ∅ ∨ (𝐵𝑋) = 1o ∨ (𝐵𝑋) = 2o) ↔ ((𝐵𝑋) = 1o ∨ (𝐵𝑋) = 2o ∨ (𝐵𝑋) = ∅))
134 3orrot 1086 . . . 4 (((𝐵𝑋) = 1o ∨ (𝐵𝑋) = 2o ∨ (𝐵𝑋) = ∅) ↔ ((𝐵𝑋) = 2o ∨ (𝐵𝑋) = ∅ ∨ (𝐵𝑋) = 1o))
135133, 134bitri 276 . . 3 (((𝐵𝑋) = ∅ ∨ (𝐵𝑋) = 1o ∨ (𝐵𝑋) = 2o) ↔ ((𝐵𝑋) = 2o ∨ (𝐵𝑋) = ∅ ∨ (𝐵𝑋) = 1o))
136132, 135sylib 219 . 2 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → ((𝐵𝑋) = 2o ∨ (𝐵𝑋) = ∅ ∨ (𝐵𝑋) = 1o))
13731, 130, 136ecase23d 1466 1 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐴𝑋) = ∅) → (𝐵𝑋) = 2o)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 207  wa 396  wo 843  w3o 1080  w3a 1081   = wceq 1530  wcel 2107  wral 3143  wrex 3144  wss 3940  c0 4295  {ctp 4568  cop 4570   class class class wbr 5063   Or wor 5472  dom cdm 5554  cres 5556  Rel wrel 5559  Oncon0 6190  suc csuc 6192  Fun wfun 6348  cfv 6354  1oc1o 8091  2oc2o 8092   No csur 33050   <s cslt 33051
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1904  ax-6 1963  ax-7 2008  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2153  ax-12 2169  ax-13 2385  ax-ext 2798  ax-rep 5187  ax-sep 5200  ax-nul 5207  ax-pow 5263  ax-pr 5326  ax-un 7455
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 844  df-3or 1082  df-3an 1083  df-tru 1533  df-ex 1774  df-nf 1778  df-sb 2063  df-mo 2620  df-eu 2652  df-clab 2805  df-cleq 2819  df-clel 2898  df-nfc 2968  df-ne 3022  df-ral 3148  df-rex 3149  df-reu 3150  df-rab 3152  df-v 3502  df-sbc 3777  df-csb 3888  df-dif 3943  df-un 3945  df-in 3947  df-ss 3956  df-pss 3958  df-nul 4296  df-if 4471  df-pw 4544  df-sn 4565  df-pr 4567  df-tp 4569  df-op 4571  df-uni 4838  df-iun 4919  df-br 5064  df-opab 5126  df-mpt 5144  df-tr 5170  df-id 5459  df-eprel 5464  df-po 5473  df-so 5474  df-fr 5513  df-we 5515  df-xp 5560  df-rel 5561  df-cnv 5562  df-co 5563  df-dm 5564  df-rn 5565  df-res 5566  df-ima 5567  df-ord 6193  df-on 6194  df-suc 6196  df-iota 6313  df-fun 6356  df-fn 6357  df-f 6358  df-f1 6359  df-fo 6360  df-f1o 6361  df-fv 6362  df-1o 8098  df-2o 8099  df-no 33053  df-slt 33054
This theorem is referenced by:  nosupbnd1lem4  33114
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