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Theorem nogt01o 33908
Description: Given 𝐴 greater than 𝐵, equal to 𝐵 up to 𝑋, and 𝐵(𝑋) undefined, then 𝐴(𝑋) = 1o. (Contributed by Scott Fenton, 9-Aug-2024.)
Assertion
Ref Expression
nogt01o (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) → (𝐴𝑋) = 1o)

Proof of Theorem nogt01o
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 sltso 33888 . . . 4 <s Or No
2 simp11 1202 . . . 4 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) → 𝐴 No )
3 sonr 5527 . . . 4 (( <s Or No 𝐴 No ) → ¬ 𝐴 <s 𝐴)
41, 2, 3sylancr 587 . . 3 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) → ¬ 𝐴 <s 𝐴)
5 simpl2r 1226 . . . 4 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → 𝐴 <s 𝐵)
6 simpl2l 1225 . . . . 5 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → (𝐴𝑋) = (𝐵𝑋))
7 simpl11 1247 . . . . . . 7 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → 𝐴 No )
8 nofun 33861 . . . . . . . 8 (𝐴 No → Fun 𝐴)
9 funrel 6458 . . . . . . . 8 (Fun 𝐴 → Rel 𝐴)
108, 9syl 17 . . . . . . 7 (𝐴 No → Rel 𝐴)
117, 10syl 17 . . . . . 6 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → Rel 𝐴)
12 simpl13 1249 . . . . . . 7 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → 𝑋 ∈ On)
13 simpr 485 . . . . . . 7 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → (𝐴𝑋) = ∅)
14 nolt02olem 33906 . . . . . . 7 ((𝐴 No 𝑋 ∈ On ∧ (𝐴𝑋) = ∅) → dom 𝐴𝑋)
157, 12, 13, 14syl3anc 1370 . . . . . 6 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → dom 𝐴𝑋)
16 relssres 5935 . . . . . 6 ((Rel 𝐴 ∧ dom 𝐴𝑋) → (𝐴𝑋) = 𝐴)
1711, 15, 16syl2anc 584 . . . . 5 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → (𝐴𝑋) = 𝐴)
18 simpl12 1248 . . . . . . 7 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → 𝐵 No )
19 nofun 33861 . . . . . . . 8 (𝐵 No → Fun 𝐵)
20 funrel 6458 . . . . . . . 8 (Fun 𝐵 → Rel 𝐵)
2119, 20syl 17 . . . . . . 7 (𝐵 No → Rel 𝐵)
2218, 21syl 17 . . . . . 6 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → Rel 𝐵)
23 simpl3 1192 . . . . . . 7 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → (𝐵𝑋) = ∅)
24 nolt02olem 33906 . . . . . . 7 ((𝐵 No 𝑋 ∈ On ∧ (𝐵𝑋) = ∅) → dom 𝐵𝑋)
2518, 12, 23, 24syl3anc 1370 . . . . . 6 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → dom 𝐵𝑋)
26 relssres 5935 . . . . . 6 ((Rel 𝐵 ∧ dom 𝐵𝑋) → (𝐵𝑋) = 𝐵)
2722, 25, 26syl2anc 584 . . . . 5 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → (𝐵𝑋) = 𝐵)
286, 17, 273eqtr3d 2787 . . . 4 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → 𝐴 = 𝐵)
295, 28breqtrrd 5103 . . 3 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = ∅) → 𝐴 <s 𝐴)
304, 29mtand 813 . 2 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) → ¬ (𝐴𝑋) = ∅)
31 simp2r 1199 . . . . 5 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) → 𝐴 <s 𝐵)
32 simp12 1203 . . . . . 6 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) → 𝐵 No )
33 sltval 33859 . . . . . 6 ((𝐴 No 𝐵 No ) → (𝐴 <s 𝐵 ↔ ∃𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) ∧ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥))))
342, 32, 33syl2anc 584 . . . . 5 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) → (𝐴 <s 𝐵 ↔ ∃𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) ∧ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥))))
3531, 34mpbid 231 . . . 4 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) → ∃𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) ∧ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
36 ralinexa 3192 . . . . 5 (∀𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)) ↔ ¬ ∃𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) ∧ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
3736con2bii 358 . . . 4 (∃𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) ∧ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)) ↔ ¬ ∀𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
3835, 37sylib 217 . . 3 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) → ¬ ∀𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
39 1n0 8327 . . . . . . . . . . . 12 1o ≠ ∅
4039neii 2946 . . . . . . . . . . 11 ¬ 1o = ∅
41 eqtr2 2763 . . . . . . . . . . 11 ((((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = ∅) → 1o = ∅)
4240, 41mto 196 . . . . . . . . . 10 ¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = ∅)
43 df-2o 8307 . . . . . . . . . . . . 13 2o = suc 1o
44 2on 8320 . . . . . . . . . . . . . . . 16 2o ∈ On
4543, 44eqeltrri 2837 . . . . . . . . . . . . . . 15 suc 1o ∈ On
4645onordi 6375 . . . . . . . . . . . . . 14 Ord suc 1o
47 1oex 8316 . . . . . . . . . . . . . . 15 1o ∈ V
4847sucid 6349 . . . . . . . . . . . . . 14 1o ∈ suc 1o
49 nordeq 6289 . . . . . . . . . . . . . 14 ((Ord suc 1o ∧ 1o ∈ suc 1o) → suc 1o ≠ 1o)
5046, 48, 49mp2an 689 . . . . . . . . . . . . 13 suc 1o ≠ 1o
5143, 50eqnetri 3015 . . . . . . . . . . . 12 2o ≠ 1o
5251nesymi 3002 . . . . . . . . . . 11 ¬ 1o = 2o
53 eqtr2 2763 . . . . . . . . . . 11 ((((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = 2o) → 1o = 2o)
5452, 53mto 196 . . . . . . . . . 10 ¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = 2o)
55 2on0 8322 . . . . . . . . . . . 12 2o ≠ ∅
5655nesymi 3002 . . . . . . . . . . 11 ¬ ∅ = 2o
57 eqtr2 2763 . . . . . . . . . . 11 ((((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 2o) → ∅ = 2o)
5856, 57mto 196 . . . . . . . . . 10 ¬ (((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 2o)
5942, 54, 583pm3.2i 1338 . . . . . . . . 9 (¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = ∅) ∧ ¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = 2o) ∧ ¬ (((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 2o))
60 fvex 6796 . . . . . . . . . . . 12 ((𝐴𝑋)‘𝑥) ∈ V
6160, 60brtp 33726 . . . . . . . . . . 11 (((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐴𝑋)‘𝑥) ↔ ((((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = ∅) ∨ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = 2o) ∨ (((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 2o)))
62 3oran 1108 . . . . . . . . . . 11 (((((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)))
6361, 62bitri 274 . . . . . . . . . 10 (((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐴𝑋)‘𝑥) ↔ ¬ (¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = ∅) ∧ ¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = 2o) ∧ ¬ (((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 2o)))
6463con2bii 358 . . . . . . . . 9 ((¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = ∅) ∧ ¬ (((𝐴𝑋)‘𝑥) = 1o ∧ ((𝐴𝑋)‘𝑥) = 2o) ∧ ¬ (((𝐴𝑋)‘𝑥) = ∅ ∧ ((𝐴𝑋)‘𝑥) = 2o)) ↔ ¬ ((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐴𝑋)‘𝑥))
6559, 64mpbi 229 . . . . . . . 8 ¬ ((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐴𝑋)‘𝑥)
66 simpl2l 1225 . . . . . . . . . . 11 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) → (𝐴𝑋) = (𝐵𝑋))
6766adantr 481 . . . . . . . . . 10 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝐴𝑋) = (𝐵𝑋))
6867fveq1d 6785 . . . . . . . . 9 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ((𝐴𝑋)‘𝑥) = ((𝐵𝑋)‘𝑥))
6968breq2d 5087 . . . . . . . 8 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐴𝑋)‘𝑥) ↔ ((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐵𝑋)‘𝑥)))
7065, 69mtbii 326 . . . . . . 7 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ¬ ((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐵𝑋)‘𝑥))
71 fvres 6802 . . . . . . . . 9 (𝑥𝑋 → ((𝐴𝑋)‘𝑥) = (𝐴𝑥))
72 fvres 6802 . . . . . . . . 9 (𝑥𝑋 → ((𝐵𝑋)‘𝑥) = (𝐵𝑥))
7371, 72breq12d 5088 . . . . . . . 8 (𝑥𝑋 → (((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐵𝑋)‘𝑥) ↔ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
7473notbid 318 . . . . . . 7 (𝑥𝑋 → (¬ ((𝐴𝑋)‘𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} ((𝐵𝑋)‘𝑥) ↔ ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
7570, 74syl5ibcom 244 . . . . . 6 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝑥𝑋 → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
7651neii 2946 . . . . . . . . . . 11 ¬ 2o = 1o
7776intnanr 488 . . . . . . . . . 10 ¬ (2o = 1o ∧ ∅ = ∅)
7856intnan 487 . . . . . . . . . 10 ¬ (2o = 1o ∧ ∅ = 2o)
7956intnan 487 . . . . . . . . . 10 ¬ (2o = ∅ ∧ ∅ = 2o)
8077, 78, 793pm3.2i 1338 . . . . . . . . 9 (¬ (2o = 1o ∧ ∅ = ∅) ∧ ¬ (2o = 1o ∧ ∅ = 2o) ∧ ¬ (2o = ∅ ∧ ∅ = 2o))
81 2oex 8317 . . . . . . . . . . . 12 2o ∈ V
82 0ex 5232 . . . . . . . . . . . 12 ∅ ∈ V
8381, 82brtp 33726 . . . . . . . . . . 11 (2o{⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩}∅ ↔ ((2o = 1o ∧ ∅ = ∅) ∨ (2o = 1o ∧ ∅ = 2o) ∨ (2o = ∅ ∧ ∅ = 2o)))
84 3oran 1108 . . . . . . . . . . 11 (((2o = 1o ∧ ∅ = ∅) ∨ (2o = 1o ∧ ∅ = 2o) ∨ (2o = ∅ ∧ ∅ = 2o)) ↔ ¬ (¬ (2o = 1o ∧ ∅ = ∅) ∧ ¬ (2o = 1o ∧ ∅ = 2o) ∧ ¬ (2o = ∅ ∧ ∅ = 2o)))
8583, 84bitri 274 . . . . . . . . . 10 (2o{⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩}∅ ↔ ¬ (¬ (2o = 1o ∧ ∅ = ∅) ∧ ¬ (2o = 1o ∧ ∅ = 2o) ∧ ¬ (2o = ∅ ∧ ∅ = 2o)))
8685con2bii 358 . . . . . . . . 9 ((¬ (2o = 1o ∧ ∅ = ∅) ∧ ¬ (2o = 1o ∧ ∅ = 2o) ∧ ¬ (2o = ∅ ∧ ∅ = 2o)) ↔ ¬ 2o{⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩}∅)
8780, 86mpbi 229 . . . . . . . 8 ¬ 2o{⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩}∅
88 simplr 766 . . . . . . . . 9 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝐴𝑋) = 2o)
89 simpll3 1213 . . . . . . . . 9 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝐵𝑋) = ∅)
9088, 89breq12d 5088 . . . . . . . 8 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ((𝐴𝑋){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑋) ↔ 2o{⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩}∅))
9187, 90mtbiri 327 . . . . . . 7 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ¬ (𝐴𝑋){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑋))
92 fveq2 6783 . . . . . . . . 9 (𝑥 = 𝑋 → (𝐴𝑥) = (𝐴𝑋))
93 fveq2 6783 . . . . . . . . 9 (𝑥 = 𝑋 → (𝐵𝑥) = (𝐵𝑋))
9492, 93breq12d 5088 . . . . . . . 8 (𝑥 = 𝑋 → ((𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥) ↔ (𝐴𝑋){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑋)))
9594notbid 318 . . . . . . 7 (𝑥 = 𝑋 → (¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥) ↔ ¬ (𝐴𝑋){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑋)))
9691, 95syl5ibrcom 246 . . . . . 6 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝑥 = 𝑋 → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
97 fveq2 6783 . . . . . . . . . . . . 13 (𝑦 = 𝑋 → (𝐴𝑦) = (𝐴𝑋))
98 fveq2 6783 . . . . . . . . . . . . 13 (𝑦 = 𝑋 → (𝐵𝑦) = (𝐵𝑋))
9997, 98eqeq12d 2755 . . . . . . . . . . . 12 (𝑦 = 𝑋 → ((𝐴𝑦) = (𝐵𝑦) ↔ (𝐴𝑋) = (𝐵𝑋)))
10099rspccv 3559 . . . . . . . . . . 11 (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → (𝑋𝑥 → (𝐴𝑋) = (𝐵𝑋)))
101100ad2antll 726 . . . . . . . . . 10 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝑋𝑥 → (𝐴𝑋) = (𝐵𝑋)))
102 eqcom 2746 . . . . . . . . . 10 ((𝐴𝑋) = (𝐵𝑋) ↔ (𝐵𝑋) = (𝐴𝑋))
103101, 102syl6ib 250 . . . . . . . . 9 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝑋𝑥 → (𝐵𝑋) = (𝐴𝑋)))
10489, 88eqeq12d 2755 . . . . . . . . 9 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ((𝐵𝑋) = (𝐴𝑋) ↔ ∅ = 2o))
105103, 104sylibd 238 . . . . . . . 8 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝑋𝑥 → ∅ = 2o))
10656, 105mtoi 198 . . . . . . 7 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ¬ 𝑋𝑥)
107 simprl 768 . . . . . . . 8 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → 𝑥 ∈ On)
108 simpl13 1249 . . . . . . . . 9 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) → 𝑋 ∈ On)
109108adantr 481 . . . . . . . 8 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → 𝑋 ∈ On)
110 ontri1 6304 . . . . . . . . 9 ((𝑥 ∈ On ∧ 𝑋 ∈ On) → (𝑥𝑋 ↔ ¬ 𝑋𝑥))
111 onsseleq 6311 . . . . . . . . 9 ((𝑥 ∈ On ∧ 𝑋 ∈ On) → (𝑥𝑋 ↔ (𝑥𝑋𝑥 = 𝑋)))
112110, 111bitr3d 280 . . . . . . . 8 ((𝑥 ∈ On ∧ 𝑋 ∈ On) → (¬ 𝑋𝑥 ↔ (𝑥𝑋𝑥 = 𝑋)))
113107, 109, 112syl2anc 584 . . . . . . 7 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (¬ 𝑋𝑥 ↔ (𝑥𝑋𝑥 = 𝑋)))
114106, 113mpbid 231 . . . . . 6 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → (𝑥𝑋𝑥 = 𝑋))
11575, 96, 114mpjaod 857 . . . . 5 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ (𝑥 ∈ On ∧ ∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦))) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥))
116115expr 457 . . . 4 (((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) ∧ 𝑥 ∈ On) → (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
117116ralrimiva 3104 . . 3 ((((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) ∧ (𝐴𝑋) = 2o) → ∀𝑥 ∈ On (∀𝑦𝑥 (𝐴𝑦) = (𝐵𝑦) → ¬ (𝐴𝑥){⟨1o, ∅⟩, ⟨1o, 2o⟩, ⟨∅, 2o⟩} (𝐵𝑥)))
11838, 117mtand 813 . 2 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) → ¬ (𝐴𝑋) = 2o)
119 nofv 33869 . . . 4 (𝐴 No → ((𝐴𝑋) = ∅ ∨ (𝐴𝑋) = 1o ∨ (𝐴𝑋) = 2o))
1202, 119syl 17 . . 3 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) → ((𝐴𝑋) = ∅ ∨ (𝐴𝑋) = 1o ∨ (𝐴𝑋) = 2o))
121 3orcoma 1092 . . 3 (((𝐴𝑋) = ∅ ∨ (𝐴𝑋) = 1o ∨ (𝐴𝑋) = 2o) ↔ ((𝐴𝑋) = 1o ∨ (𝐴𝑋) = ∅ ∨ (𝐴𝑋) = 2o))
122120, 121sylib 217 . 2 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) → ((𝐴𝑋) = 1o ∨ (𝐴𝑋) = ∅ ∨ (𝐴𝑋) = 2o))
12330, 118, 122ecase23d 1472 1 (((𝐴 No 𝐵 No 𝑋 ∈ On) ∧ ((𝐴𝑋) = (𝐵𝑋) ∧ 𝐴 <s 𝐵) ∧ (𝐵𝑋) = ∅) → (𝐴𝑋) = 1o)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 205  wa 396  wo 844  w3o 1085  w3a 1086   = wceq 1539  wcel 2107  wne 2944  wral 3065  wrex 3066  wss 3888  c0 4257  {ctp 4566  cop 4568   class class class wbr 5075   Or wor 5503  dom cdm 5590  cres 5592  Rel wrel 5595  Ord word 6269  Oncon0 6270  suc csuc 6272  Fun wfun 6431  cfv 6437  1oc1o 8299  2oc2o 8300   No csur 33852   <s cslt 33853
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2155  ax-12 2172  ax-ext 2710  ax-rep 5210  ax-sep 5224  ax-nul 5231  ax-pr 5353
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2069  df-mo 2541  df-eu 2570  df-clab 2717  df-cleq 2731  df-clel 2817  df-nfc 2890  df-ne 2945  df-ral 3070  df-rex 3071  df-reu 3073  df-rab 3074  df-v 3435  df-sbc 3718  df-csb 3834  df-dif 3891  df-un 3893  df-in 3895  df-ss 3905  df-pss 3907  df-nul 4258  df-if 4461  df-pw 4536  df-sn 4563  df-pr 4565  df-tp 4567  df-op 4569  df-uni 4841  df-iun 4927  df-br 5076  df-opab 5138  df-mpt 5159  df-tr 5193  df-id 5490  df-eprel 5496  df-po 5504  df-so 5505  df-fr 5545  df-we 5547  df-xp 5596  df-rel 5597  df-cnv 5598  df-co 5599  df-dm 5600  df-rn 5601  df-res 5602  df-ima 5603  df-ord 6273  df-on 6274  df-suc 6276  df-iota 6395  df-fun 6439  df-fn 6440  df-f 6441  df-f1 6442  df-fo 6443  df-f1o 6444  df-fv 6445  df-1o 8306  df-2o 8307  df-no 33855  df-slt 33856
This theorem is referenced by:  noinfbnd1lem4  33938
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