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Theorem infxpenlem 9431
Description: Lemma for infxpen 9432. (Contributed by Mario Carneiro, 9-Mar-2013.) (Revised by Mario Carneiro, 26-Jun-2015.)
Hypotheses
Ref Expression
leweon.1 𝐿 = {⟨𝑥, 𝑦⟩ ∣ ((𝑥 ∈ (On × On) ∧ 𝑦 ∈ (On × On)) ∧ ((1st𝑥) ∈ (1st𝑦) ∨ ((1st𝑥) = (1st𝑦) ∧ (2nd𝑥) ∈ (2nd𝑦))))}
r0weon.1 𝑅 = {⟨𝑧, 𝑤⟩ ∣ ((𝑧 ∈ (On × On) ∧ 𝑤 ∈ (On × On)) ∧ (((1st𝑧) ∪ (2nd𝑧)) ∈ ((1st𝑤) ∪ (2nd𝑤)) ∨ (((1st𝑧) ∪ (2nd𝑧)) = ((1st𝑤) ∪ (2nd𝑤)) ∧ 𝑧𝐿𝑤)))}
infxpen.1 𝑄 = (𝑅 ∩ ((𝑎 × 𝑎) × (𝑎 × 𝑎)))
infxpen.2 (𝜑 ↔ ((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ∀𝑚𝑎 𝑚𝑎)))
infxpen.3 𝑀 = ((1st𝑤) ∪ (2nd𝑤))
infxpen.4 𝐽 = OrdIso(𝑄, (𝑎 × 𝑎))
Assertion
Ref Expression
infxpenlem ((𝐴 ∈ On ∧ ω ⊆ 𝐴) → (𝐴 × 𝐴) ≈ 𝐴)
Distinct variable groups:   𝐴,𝑎   𝑤,𝐽   𝑧,𝑤,𝐿   𝑧,𝑚,𝑀   𝜑,𝑤,𝑧   𝑧,𝑄   𝑚,𝑎,𝑤,𝑥,𝑦,𝑧
Allowed substitution hints:   𝜑(𝑥,𝑦,𝑚,𝑎)   𝐴(𝑥,𝑦,𝑧,𝑤,𝑚)   𝑄(𝑥,𝑦,𝑤,𝑚,𝑎)   𝑅(𝑥,𝑦,𝑧,𝑤,𝑚,𝑎)   𝐽(𝑥,𝑦,𝑧,𝑚,𝑎)   𝐿(𝑥,𝑦,𝑚,𝑎)   𝑀(𝑥,𝑦,𝑤,𝑎)

Proof of Theorem infxpenlem
StepHypRef Expression
1 sseq2 3996 . . . 4 (𝑎 = 𝑚 → (ω ⊆ 𝑎 ↔ ω ⊆ 𝑚))
2 xpeq12 5578 . . . . . 6 ((𝑎 = 𝑚𝑎 = 𝑚) → (𝑎 × 𝑎) = (𝑚 × 𝑚))
32anidms 567 . . . . 5 (𝑎 = 𝑚 → (𝑎 × 𝑎) = (𝑚 × 𝑚))
4 id 22 . . . . 5 (𝑎 = 𝑚𝑎 = 𝑚)
53, 4breq12d 5075 . . . 4 (𝑎 = 𝑚 → ((𝑎 × 𝑎) ≈ 𝑎 ↔ (𝑚 × 𝑚) ≈ 𝑚))
61, 5imbi12d 346 . . 3 (𝑎 = 𝑚 → ((ω ⊆ 𝑎 → (𝑎 × 𝑎) ≈ 𝑎) ↔ (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)))
7 sseq2 3996 . . . 4 (𝑎 = 𝐴 → (ω ⊆ 𝑎 ↔ ω ⊆ 𝐴))
8 xpeq12 5578 . . . . . 6 ((𝑎 = 𝐴𝑎 = 𝐴) → (𝑎 × 𝑎) = (𝐴 × 𝐴))
98anidms 567 . . . . 5 (𝑎 = 𝐴 → (𝑎 × 𝑎) = (𝐴 × 𝐴))
10 id 22 . . . . 5 (𝑎 = 𝐴𝑎 = 𝐴)
119, 10breq12d 5075 . . . 4 (𝑎 = 𝐴 → ((𝑎 × 𝑎) ≈ 𝑎 ↔ (𝐴 × 𝐴) ≈ 𝐴))
127, 11imbi12d 346 . . 3 (𝑎 = 𝐴 → ((ω ⊆ 𝑎 → (𝑎 × 𝑎) ≈ 𝑎) ↔ (ω ⊆ 𝐴 → (𝐴 × 𝐴) ≈ 𝐴)))
13 infxpen.2 . . . . . . . 8 (𝜑 ↔ ((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ∀𝑚𝑎 𝑚𝑎)))
14 vex 3502 . . . . . . . . . . . . 13 𝑎 ∈ V
1514, 14xpex 7468 . . . . . . . . . . . 12 (𝑎 × 𝑎) ∈ V
16 simpll 763 . . . . . . . . . . . . . . . . . 18 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ∀𝑚𝑎 𝑚𝑎)) → 𝑎 ∈ On)
1713, 16sylbi 218 . . . . . . . . . . . . . . . . 17 (𝜑𝑎 ∈ On)
18 onss 7496 . . . . . . . . . . . . . . . . 17 (𝑎 ∈ On → 𝑎 ⊆ On)
1917, 18syl 17 . . . . . . . . . . . . . . . 16 (𝜑𝑎 ⊆ On)
20 xpss12 5568 . . . . . . . . . . . . . . . 16 ((𝑎 ⊆ On ∧ 𝑎 ⊆ On) → (𝑎 × 𝑎) ⊆ (On × On))
2119, 19, 20syl2anc 584 . . . . . . . . . . . . . . 15 (𝜑 → (𝑎 × 𝑎) ⊆ (On × On))
22 leweon.1 . . . . . . . . . . . . . . . . 17 𝐿 = {⟨𝑥, 𝑦⟩ ∣ ((𝑥 ∈ (On × On) ∧ 𝑦 ∈ (On × On)) ∧ ((1st𝑥) ∈ (1st𝑦) ∨ ((1st𝑥) = (1st𝑦) ∧ (2nd𝑥) ∈ (2nd𝑦))))}
23 r0weon.1 . . . . . . . . . . . . . . . . 17 𝑅 = {⟨𝑧, 𝑤⟩ ∣ ((𝑧 ∈ (On × On) ∧ 𝑤 ∈ (On × On)) ∧ (((1st𝑧) ∪ (2nd𝑧)) ∈ ((1st𝑤) ∪ (2nd𝑤)) ∨ (((1st𝑧) ∪ (2nd𝑧)) = ((1st𝑤) ∪ (2nd𝑤)) ∧ 𝑧𝐿𝑤)))}
2422, 23r0weon 9430 . . . . . . . . . . . . . . . 16 (𝑅 We (On × On) ∧ 𝑅 Se (On × On))
2524simpli 484 . . . . . . . . . . . . . . 15 𝑅 We (On × On)
26 wess 5540 . . . . . . . . . . . . . . 15 ((𝑎 × 𝑎) ⊆ (On × On) → (𝑅 We (On × On) → 𝑅 We (𝑎 × 𝑎)))
2721, 25, 26mpisyl 21 . . . . . . . . . . . . . 14 (𝜑𝑅 We (𝑎 × 𝑎))
28 weinxp 5634 . . . . . . . . . . . . . 14 (𝑅 We (𝑎 × 𝑎) ↔ (𝑅 ∩ ((𝑎 × 𝑎) × (𝑎 × 𝑎))) We (𝑎 × 𝑎))
2927, 28sylib 219 . . . . . . . . . . . . 13 (𝜑 → (𝑅 ∩ ((𝑎 × 𝑎) × (𝑎 × 𝑎))) We (𝑎 × 𝑎))
30 infxpen.1 . . . . . . . . . . . . . 14 𝑄 = (𝑅 ∩ ((𝑎 × 𝑎) × (𝑎 × 𝑎)))
31 weeq1 5541 . . . . . . . . . . . . . 14 (𝑄 = (𝑅 ∩ ((𝑎 × 𝑎) × (𝑎 × 𝑎))) → (𝑄 We (𝑎 × 𝑎) ↔ (𝑅 ∩ ((𝑎 × 𝑎) × (𝑎 × 𝑎))) We (𝑎 × 𝑎)))
3230, 31ax-mp 5 . . . . . . . . . . . . 13 (𝑄 We (𝑎 × 𝑎) ↔ (𝑅 ∩ ((𝑎 × 𝑎) × (𝑎 × 𝑎))) We (𝑎 × 𝑎))
3329, 32sylibr 235 . . . . . . . . . . . 12 (𝜑𝑄 We (𝑎 × 𝑎))
34 infxpen.4 . . . . . . . . . . . . 13 𝐽 = OrdIso(𝑄, (𝑎 × 𝑎))
3534oiiso 8993 . . . . . . . . . . . 12 (((𝑎 × 𝑎) ∈ V ∧ 𝑄 We (𝑎 × 𝑎)) → 𝐽 Isom E , 𝑄 (dom 𝐽, (𝑎 × 𝑎)))
3615, 33, 35sylancr 587 . . . . . . . . . . 11 (𝜑𝐽 Isom E , 𝑄 (dom 𝐽, (𝑎 × 𝑎)))
37 isof1o 7071 . . . . . . . . . . 11 (𝐽 Isom E , 𝑄 (dom 𝐽, (𝑎 × 𝑎)) → 𝐽:dom 𝐽1-1-onto→(𝑎 × 𝑎))
38 f1ocnv 6623 . . . . . . . . . . 11 (𝐽:dom 𝐽1-1-onto→(𝑎 × 𝑎) → 𝐽:(𝑎 × 𝑎)–1-1-onto→dom 𝐽)
39 f1of1 6610 . . . . . . . . . . 11 (𝐽:(𝑎 × 𝑎)–1-1-onto→dom 𝐽𝐽:(𝑎 × 𝑎)–1-1→dom 𝐽)
4036, 37, 38, 394syl 19 . . . . . . . . . 10 (𝜑𝐽:(𝑎 × 𝑎)–1-1→dom 𝐽)
41 f1f1orn 6622 . . . . . . . . . 10 (𝐽:(𝑎 × 𝑎)–1-1→dom 𝐽𝐽:(𝑎 × 𝑎)–1-1-onto→ran 𝐽)
4215f1oen 8522 . . . . . . . . . 10 (𝐽:(𝑎 × 𝑎)–1-1-onto→ran 𝐽 → (𝑎 × 𝑎) ≈ ran 𝐽)
4340, 41, 423syl 18 . . . . . . . . 9 (𝜑 → (𝑎 × 𝑎) ≈ ran 𝐽)
44 f1ofn 6612 . . . . . . . . . . 11 (𝐽:(𝑎 × 𝑎)–1-1-onto→dom 𝐽𝐽 Fn (𝑎 × 𝑎))
4536, 37, 38, 444syl 19 . . . . . . . . . 10 (𝜑𝐽 Fn (𝑎 × 𝑎))
4636adantr 481 . . . . . . . . . . . . . . . . 17 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → 𝐽 Isom E , 𝑄 (dom 𝐽, (𝑎 × 𝑎)))
4737, 38, 393syl 18 . . . . . . . . . . . . . . . . . 18 (𝐽 Isom E , 𝑄 (dom 𝐽, (𝑎 × 𝑎)) → 𝐽:(𝑎 × 𝑎)–1-1→dom 𝐽)
48 cnvimass 5946 . . . . . . . . . . . . . . . . . . 19 (𝑄 “ {𝑤}) ⊆ dom 𝑄
49 inss2 4209 . . . . . . . . . . . . . . . . . . . . . 22 (𝑅 ∩ ((𝑎 × 𝑎) × (𝑎 × 𝑎))) ⊆ ((𝑎 × 𝑎) × (𝑎 × 𝑎))
5030, 49eqsstri 4004 . . . . . . . . . . . . . . . . . . . . 21 𝑄 ⊆ ((𝑎 × 𝑎) × (𝑎 × 𝑎))
51 dmss 5769 . . . . . . . . . . . . . . . . . . . . 21 (𝑄 ⊆ ((𝑎 × 𝑎) × (𝑎 × 𝑎)) → dom 𝑄 ⊆ dom ((𝑎 × 𝑎) × (𝑎 × 𝑎)))
5250, 51ax-mp 5 . . . . . . . . . . . . . . . . . . . 20 dom 𝑄 ⊆ dom ((𝑎 × 𝑎) × (𝑎 × 𝑎))
53 dmxpid 5798 . . . . . . . . . . . . . . . . . . . 20 dom ((𝑎 × 𝑎) × (𝑎 × 𝑎)) = (𝑎 × 𝑎)
5452, 53sseqtri 4006 . . . . . . . . . . . . . . . . . . 19 dom 𝑄 ⊆ (𝑎 × 𝑎)
5548, 54sstri 3979 . . . . . . . . . . . . . . . . . 18 (𝑄 “ {𝑤}) ⊆ (𝑎 × 𝑎)
56 f1ores 6625 . . . . . . . . . . . . . . . . . 18 ((𝐽:(𝑎 × 𝑎)–1-1→dom 𝐽 ∧ (𝑄 “ {𝑤}) ⊆ (𝑎 × 𝑎)) → (𝐽 ↾ (𝑄 “ {𝑤})):(𝑄 “ {𝑤})–1-1-onto→(𝐽 “ (𝑄 “ {𝑤})))
5747, 55, 56sylancl 586 . . . . . . . . . . . . . . . . 17 (𝐽 Isom E , 𝑄 (dom 𝐽, (𝑎 × 𝑎)) → (𝐽 ↾ (𝑄 “ {𝑤})):(𝑄 “ {𝑤})–1-1-onto→(𝐽 “ (𝑄 “ {𝑤})))
5815, 15xpex 7468 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑎 × 𝑎) × (𝑎 × 𝑎)) ∈ V
5958inex2 5218 . . . . . . . . . . . . . . . . . . . . 21 (𝑅 ∩ ((𝑎 × 𝑎) × (𝑎 × 𝑎))) ∈ V
6030, 59eqeltri 2913 . . . . . . . . . . . . . . . . . . . 20 𝑄 ∈ V
6160cnvex 7621 . . . . . . . . . . . . . . . . . . 19 𝑄 ∈ V
6261imaex 7612 . . . . . . . . . . . . . . . . . 18 (𝑄 “ {𝑤}) ∈ V
6362f1oen 8522 . . . . . . . . . . . . . . . . 17 ((𝐽 ↾ (𝑄 “ {𝑤})):(𝑄 “ {𝑤})–1-1-onto→(𝐽 “ (𝑄 “ {𝑤})) → (𝑄 “ {𝑤}) ≈ (𝐽 “ (𝑄 “ {𝑤})))
6446, 57, 633syl 18 . . . . . . . . . . . . . . . 16 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝑄 “ {𝑤}) ≈ (𝐽 “ (𝑄 “ {𝑤})))
65 sseqin2 4195 . . . . . . . . . . . . . . . . . . 19 ((𝑄 “ {𝑤}) ⊆ (𝑎 × 𝑎) ↔ ((𝑎 × 𝑎) ∩ (𝑄 “ {𝑤})) = (𝑄 “ {𝑤}))
6655, 65mpbi 231 . . . . . . . . . . . . . . . . . 18 ((𝑎 × 𝑎) ∩ (𝑄 “ {𝑤})) = (𝑄 “ {𝑤})
6766imaeq2i 5924 . . . . . . . . . . . . . . . . 17 (𝐽 “ ((𝑎 × 𝑎) ∩ (𝑄 “ {𝑤}))) = (𝐽 “ (𝑄 “ {𝑤}))
68 isocnv 7078 . . . . . . . . . . . . . . . . . . . 20 (𝐽 Isom E , 𝑄 (dom 𝐽, (𝑎 × 𝑎)) → 𝐽 Isom 𝑄, E ((𝑎 × 𝑎), dom 𝐽))
6946, 68syl 17 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → 𝐽 Isom 𝑄, E ((𝑎 × 𝑎), dom 𝐽))
70 simpr 485 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → 𝑤 ∈ (𝑎 × 𝑎))
71 isoini 7086 . . . . . . . . . . . . . . . . . . 19 ((𝐽 Isom 𝑄, E ((𝑎 × 𝑎), dom 𝐽) ∧ 𝑤 ∈ (𝑎 × 𝑎)) → (𝐽 “ ((𝑎 × 𝑎) ∩ (𝑄 “ {𝑤}))) = (dom 𝐽 ∩ ( E “ {(𝐽𝑤)})))
7269, 70, 71syl2anc 584 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝐽 “ ((𝑎 × 𝑎) ∩ (𝑄 “ {𝑤}))) = (dom 𝐽 ∩ ( E “ {(𝐽𝑤)})))
73 fvex 6679 . . . . . . . . . . . . . . . . . . . . 21 (𝐽𝑤) ∈ V
7473epini 5956 . . . . . . . . . . . . . . . . . . . 20 ( E “ {(𝐽𝑤)}) = (𝐽𝑤)
7574ineq2i 4189 . . . . . . . . . . . . . . . . . . 19 (dom 𝐽 ∩ ( E “ {(𝐽𝑤)})) = (dom 𝐽 ∩ (𝐽𝑤))
7634oicl 8985 . . . . . . . . . . . . . . . . . . . . 21 Ord dom 𝐽
77 f1of 6611 . . . . . . . . . . . . . . . . . . . . . . 23 (𝐽:(𝑎 × 𝑎)–1-1-onto→dom 𝐽𝐽:(𝑎 × 𝑎)⟶dom 𝐽)
7836, 37, 38, 774syl 19 . . . . . . . . . . . . . . . . . . . . . 22 (𝜑𝐽:(𝑎 × 𝑎)⟶dom 𝐽)
7978ffvelrnda 6846 . . . . . . . . . . . . . . . . . . . . 21 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝐽𝑤) ∈ dom 𝐽)
80 ordelss 6204 . . . . . . . . . . . . . . . . . . . . 21 ((Ord dom 𝐽 ∧ (𝐽𝑤) ∈ dom 𝐽) → (𝐽𝑤) ⊆ dom 𝐽)
8176, 79, 80sylancr 587 . . . . . . . . . . . . . . . . . . . 20 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝐽𝑤) ⊆ dom 𝐽)
82 sseqin2 4195 . . . . . . . . . . . . . . . . . . . 20 ((𝐽𝑤) ⊆ dom 𝐽 ↔ (dom 𝐽 ∩ (𝐽𝑤)) = (𝐽𝑤))
8381, 82sylib 219 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (dom 𝐽 ∩ (𝐽𝑤)) = (𝐽𝑤))
8475, 83syl5eq 2872 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (dom 𝐽 ∩ ( E “ {(𝐽𝑤)})) = (𝐽𝑤))
8572, 84eqtrd 2860 . . . . . . . . . . . . . . . . 17 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝐽 “ ((𝑎 × 𝑎) ∩ (𝑄 “ {𝑤}))) = (𝐽𝑤))
8667, 85syl5eqr 2874 . . . . . . . . . . . . . . . 16 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝐽 “ (𝑄 “ {𝑤})) = (𝐽𝑤))
8764, 86breqtrd 5088 . . . . . . . . . . . . . . 15 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝑄 “ {𝑤}) ≈ (𝐽𝑤))
8887ensymd 8552 . . . . . . . . . . . . . 14 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝐽𝑤) ≈ (𝑄 “ {𝑤}))
89 infxpen.3 . . . . . . . . . . . . . . . . . . 19 𝑀 = ((1st𝑤) ∪ (2nd𝑤))
90 fvex 6679 . . . . . . . . . . . . . . . . . . . 20 (1st𝑤) ∈ V
91 fvex 6679 . . . . . . . . . . . . . . . . . . . 20 (2nd𝑤) ∈ V
9290, 91unex 7461 . . . . . . . . . . . . . . . . . . 19 ((1st𝑤) ∪ (2nd𝑤)) ∈ V
9389, 92eqeltri 2913 . . . . . . . . . . . . . . . . . 18 𝑀 ∈ V
9493sucex 7517 . . . . . . . . . . . . . . . . 17 suc 𝑀 ∈ V
9594, 94xpex 7468 . . . . . . . . . . . . . . . 16 (suc 𝑀 × suc 𝑀) ∈ V
96 xpss 5569 . . . . . . . . . . . . . . . . . . . 20 (𝑎 × 𝑎) ⊆ (V × V)
97 simp3 1132 . . . . . . . . . . . . . . . . . . . . . 22 ((𝜑𝑤 ∈ (𝑎 × 𝑎) ∧ 𝑧 ∈ (𝑄 “ {𝑤})) → 𝑧 ∈ (𝑄 “ {𝑤}))
98 vex 3502 . . . . . . . . . . . . . . . . . . . . . . . 24 𝑧 ∈ V
9998eliniseg 5955 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑤 ∈ V → (𝑧 ∈ (𝑄 “ {𝑤}) ↔ 𝑧𝑄𝑤))
10099elv 3504 . . . . . . . . . . . . . . . . . . . . . 22 (𝑧 ∈ (𝑄 “ {𝑤}) ↔ 𝑧𝑄𝑤)
10197, 100sylib 219 . . . . . . . . . . . . . . . . . . . . 21 ((𝜑𝑤 ∈ (𝑎 × 𝑎) ∧ 𝑧 ∈ (𝑄 “ {𝑤})) → 𝑧𝑄𝑤)
10230breqi 5068 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑧𝑄𝑤𝑧(𝑅 ∩ ((𝑎 × 𝑎) × (𝑎 × 𝑎)))𝑤)
103 brin 5114 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑧(𝑅 ∩ ((𝑎 × 𝑎) × (𝑎 × 𝑎)))𝑤 ↔ (𝑧𝑅𝑤𝑧((𝑎 × 𝑎) × (𝑎 × 𝑎))𝑤))
104102, 103bitri 276 . . . . . . . . . . . . . . . . . . . . . 22 (𝑧𝑄𝑤 ↔ (𝑧𝑅𝑤𝑧((𝑎 × 𝑎) × (𝑎 × 𝑎))𝑤))
105104simprbi 497 . . . . . . . . . . . . . . . . . . . . 21 (𝑧𝑄𝑤𝑧((𝑎 × 𝑎) × (𝑎 × 𝑎))𝑤)
106 brxp 5599 . . . . . . . . . . . . . . . . . . . . . 22 (𝑧((𝑎 × 𝑎) × (𝑎 × 𝑎))𝑤 ↔ (𝑧 ∈ (𝑎 × 𝑎) ∧ 𝑤 ∈ (𝑎 × 𝑎)))
107106simplbi 498 . . . . . . . . . . . . . . . . . . . . 21 (𝑧((𝑎 × 𝑎) × (𝑎 × 𝑎))𝑤𝑧 ∈ (𝑎 × 𝑎))
108101, 105, 1073syl 18 . . . . . . . . . . . . . . . . . . . 20 ((𝜑𝑤 ∈ (𝑎 × 𝑎) ∧ 𝑧 ∈ (𝑄 “ {𝑤})) → 𝑧 ∈ (𝑎 × 𝑎))
10996, 108sseldi 3968 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑤 ∈ (𝑎 × 𝑎) ∧ 𝑧 ∈ (𝑄 “ {𝑤})) → 𝑧 ∈ (V × V))
11017adantr 481 . . . . . . . . . . . . . . . . . . . . . 22 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → 𝑎 ∈ On)
1111103adant3 1126 . . . . . . . . . . . . . . . . . . . . 21 ((𝜑𝑤 ∈ (𝑎 × 𝑎) ∧ 𝑧 ∈ (𝑄 “ {𝑤})) → 𝑎 ∈ On)
112 xp1st 7715 . . . . . . . . . . . . . . . . . . . . . 22 (𝑧 ∈ (𝑎 × 𝑎) → (1st𝑧) ∈ 𝑎)
113 onelon 6213 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑎 ∈ On ∧ (1st𝑧) ∈ 𝑎) → (1st𝑧) ∈ On)
114112, 113sylan2 592 . . . . . . . . . . . . . . . . . . . . 21 ((𝑎 ∈ On ∧ 𝑧 ∈ (𝑎 × 𝑎)) → (1st𝑧) ∈ On)
115111, 108, 114syl2anc 584 . . . . . . . . . . . . . . . . . . . 20 ((𝜑𝑤 ∈ (𝑎 × 𝑎) ∧ 𝑧 ∈ (𝑄 “ {𝑤})) → (1st𝑧) ∈ On)
116 eloni 6198 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑎 ∈ On → Ord 𝑎)
117 elxp7 7718 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑤 ∈ (𝑎 × 𝑎) ↔ (𝑤 ∈ (V × V) ∧ ((1st𝑤) ∈ 𝑎 ∧ (2nd𝑤) ∈ 𝑎)))
118117simprbi 497 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑤 ∈ (𝑎 × 𝑎) → ((1st𝑤) ∈ 𝑎 ∧ (2nd𝑤) ∈ 𝑎))
119 ordunel 7533 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 ((Ord 𝑎 ∧ (1st𝑤) ∈ 𝑎 ∧ (2nd𝑤) ∈ 𝑎) → ((1st𝑤) ∪ (2nd𝑤)) ∈ 𝑎)
1201193expib 1116 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (Ord 𝑎 → (((1st𝑤) ∈ 𝑎 ∧ (2nd𝑤) ∈ 𝑎) → ((1st𝑤) ∪ (2nd𝑤)) ∈ 𝑎))
121116, 118, 120syl2im 40 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑎 ∈ On → (𝑤 ∈ (𝑎 × 𝑎) → ((1st𝑤) ∪ (2nd𝑤)) ∈ 𝑎))
122110, 70, 121sylc 65 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → ((1st𝑤) ∪ (2nd𝑤)) ∈ 𝑎)
12389, 122eqeltrid 2921 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → 𝑀𝑎)
124 simprr 769 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ∀𝑚𝑎 𝑚𝑎)) → ∀𝑚𝑎 𝑚𝑎)
12513, 124sylbi 218 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝜑 → ∀𝑚𝑎 𝑚𝑎)
126 simprl 767 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ∀𝑚𝑎 𝑚𝑎)) → ω ⊆ 𝑎)
12713, 126sylbi 218 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝜑 → ω ⊆ 𝑎)
128 iscard 9396 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((card‘𝑎) = 𝑎 ↔ (𝑎 ∈ On ∧ ∀𝑚𝑎 𝑚𝑎))
129 cardlim 9393 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (ω ⊆ (card‘𝑎) ↔ Lim (card‘𝑎))
130 sseq2 3996 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ((card‘𝑎) = 𝑎 → (ω ⊆ (card‘𝑎) ↔ ω ⊆ 𝑎))
131 limeq 6200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ((card‘𝑎) = 𝑎 → (Lim (card‘𝑎) ↔ Lim 𝑎))
132130, 131bibi12d 347 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ((card‘𝑎) = 𝑎 → ((ω ⊆ (card‘𝑎) ↔ Lim (card‘𝑎)) ↔ (ω ⊆ 𝑎 ↔ Lim 𝑎)))
133129, 132mpbii 234 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((card‘𝑎) = 𝑎 → (ω ⊆ 𝑎 ↔ Lim 𝑎))
134128, 133sylbir 236 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 ((𝑎 ∈ On ∧ ∀𝑚𝑎 𝑚𝑎) → (ω ⊆ 𝑎 ↔ Lim 𝑎))
135134biimpa 477 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝑎 ∈ On ∧ ∀𝑚𝑎 𝑚𝑎) ∧ ω ⊆ 𝑎) → Lim 𝑎)
13617, 125, 127, 135syl21anc 835 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝜑 → Lim 𝑎)
137136adantr 481 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → Lim 𝑎)
138 limsuc 7555 . . . . . . . . . . . . . . . . . . . . . . . 24 (Lim 𝑎 → (𝑀𝑎 ↔ suc 𝑀𝑎))
139137, 138syl 17 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝑀𝑎 ↔ suc 𝑀𝑎))
140123, 139mpbid 233 . . . . . . . . . . . . . . . . . . . . . 22 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → suc 𝑀𝑎)
141 onelon 6213 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑎 ∈ On ∧ suc 𝑀𝑎) → suc 𝑀 ∈ On)
14217, 140, 141syl2an2r 681 . . . . . . . . . . . . . . . . . . . . 21 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → suc 𝑀 ∈ On)
1431423adant3 1126 . . . . . . . . . . . . . . . . . . . 20 ((𝜑𝑤 ∈ (𝑎 × 𝑎) ∧ 𝑧 ∈ (𝑄 “ {𝑤})) → suc 𝑀 ∈ On)
144 ssun1 4151 . . . . . . . . . . . . . . . . . . . . 21 (1st𝑧) ⊆ ((1st𝑧) ∪ (2nd𝑧))
145144a1i 11 . . . . . . . . . . . . . . . . . . . 20 ((𝜑𝑤 ∈ (𝑎 × 𝑎) ∧ 𝑧 ∈ (𝑄 “ {𝑤})) → (1st𝑧) ⊆ ((1st𝑧) ∪ (2nd𝑧)))
146104simplbi 498 . . . . . . . . . . . . . . . . . . . . 21 (𝑧𝑄𝑤𝑧𝑅𝑤)
147 df-br 5063 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑧𝑅𝑤 ↔ ⟨𝑧, 𝑤⟩ ∈ 𝑅)
14823eleq2i 2908 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (⟨𝑧, 𝑤⟩ ∈ 𝑅 ↔ ⟨𝑧, 𝑤⟩ ∈ {⟨𝑧, 𝑤⟩ ∣ ((𝑧 ∈ (On × On) ∧ 𝑤 ∈ (On × On)) ∧ (((1st𝑧) ∪ (2nd𝑧)) ∈ ((1st𝑤) ∪ (2nd𝑤)) ∨ (((1st𝑧) ∪ (2nd𝑧)) = ((1st𝑤) ∪ (2nd𝑤)) ∧ 𝑧𝐿𝑤)))})
149 opabidw 5408 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (⟨𝑧, 𝑤⟩ ∈ {⟨𝑧, 𝑤⟩ ∣ ((𝑧 ∈ (On × On) ∧ 𝑤 ∈ (On × On)) ∧ (((1st𝑧) ∪ (2nd𝑧)) ∈ ((1st𝑤) ∪ (2nd𝑤)) ∨ (((1st𝑧) ∪ (2nd𝑧)) = ((1st𝑤) ∪ (2nd𝑤)) ∧ 𝑧𝐿𝑤)))} ↔ ((𝑧 ∈ (On × On) ∧ 𝑤 ∈ (On × On)) ∧ (((1st𝑧) ∪ (2nd𝑧)) ∈ ((1st𝑤) ∪ (2nd𝑤)) ∨ (((1st𝑧) ∪ (2nd𝑧)) = ((1st𝑤) ∪ (2nd𝑤)) ∧ 𝑧𝐿𝑤))))
150147, 148, 1493bitri 298 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑧𝑅𝑤 ↔ ((𝑧 ∈ (On × On) ∧ 𝑤 ∈ (On × On)) ∧ (((1st𝑧) ∪ (2nd𝑧)) ∈ ((1st𝑤) ∪ (2nd𝑤)) ∨ (((1st𝑧) ∪ (2nd𝑧)) = ((1st𝑤) ∪ (2nd𝑤)) ∧ 𝑧𝐿𝑤))))
151150simprbi 497 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑧𝑅𝑤 → (((1st𝑧) ∪ (2nd𝑧)) ∈ ((1st𝑤) ∪ (2nd𝑤)) ∨ (((1st𝑧) ∪ (2nd𝑧)) = ((1st𝑤) ∪ (2nd𝑤)) ∧ 𝑧𝐿𝑤)))
152 simpl 483 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((((1st𝑧) ∪ (2nd𝑧)) = ((1st𝑤) ∪ (2nd𝑤)) ∧ 𝑧𝐿𝑤) → ((1st𝑧) ∪ (2nd𝑧)) = ((1st𝑤) ∪ (2nd𝑤)))
153152orim2i 906 . . . . . . . . . . . . . . . . . . . . . . . 24 ((((1st𝑧) ∪ (2nd𝑧)) ∈ ((1st𝑤) ∪ (2nd𝑤)) ∨ (((1st𝑧) ∪ (2nd𝑧)) = ((1st𝑤) ∪ (2nd𝑤)) ∧ 𝑧𝐿𝑤)) → (((1st𝑧) ∪ (2nd𝑧)) ∈ ((1st𝑤) ∪ (2nd𝑤)) ∨ ((1st𝑧) ∪ (2nd𝑧)) = ((1st𝑤) ∪ (2nd𝑤))))
154151, 153syl 17 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑧𝑅𝑤 → (((1st𝑧) ∪ (2nd𝑧)) ∈ ((1st𝑤) ∪ (2nd𝑤)) ∨ ((1st𝑧) ∪ (2nd𝑧)) = ((1st𝑤) ∪ (2nd𝑤))))
155 fvex 6679 . . . . . . . . . . . . . . . . . . . . . . . . 25 (1st𝑧) ∈ V
156 fvex 6679 . . . . . . . . . . . . . . . . . . . . . . . . 25 (2nd𝑧) ∈ V
157155, 156unex 7461 . . . . . . . . . . . . . . . . . . . . . . . 24 ((1st𝑧) ∪ (2nd𝑧)) ∈ V
158157elsuc 6257 . . . . . . . . . . . . . . . . . . . . . . 23 (((1st𝑧) ∪ (2nd𝑧)) ∈ suc ((1st𝑤) ∪ (2nd𝑤)) ↔ (((1st𝑧) ∪ (2nd𝑧)) ∈ ((1st𝑤) ∪ (2nd𝑤)) ∨ ((1st𝑧) ∪ (2nd𝑧)) = ((1st𝑤) ∪ (2nd𝑤))))
159154, 158sylibr 235 . . . . . . . . . . . . . . . . . . . . . 22 (𝑧𝑅𝑤 → ((1st𝑧) ∪ (2nd𝑧)) ∈ suc ((1st𝑤) ∪ (2nd𝑤)))
160 suceq 6253 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑀 = ((1st𝑤) ∪ (2nd𝑤)) → suc 𝑀 = suc ((1st𝑤) ∪ (2nd𝑤)))
16189, 160ax-mp 5 . . . . . . . . . . . . . . . . . . . . . 22 suc 𝑀 = suc ((1st𝑤) ∪ (2nd𝑤))
162159, 161syl6eleqr 2928 . . . . . . . . . . . . . . . . . . . . 21 (𝑧𝑅𝑤 → ((1st𝑧) ∪ (2nd𝑧)) ∈ suc 𝑀)
163101, 146, 1623syl 18 . . . . . . . . . . . . . . . . . . . 20 ((𝜑𝑤 ∈ (𝑎 × 𝑎) ∧ 𝑧 ∈ (𝑄 “ {𝑤})) → ((1st𝑧) ∪ (2nd𝑧)) ∈ suc 𝑀)
164 ontr2 6235 . . . . . . . . . . . . . . . . . . . . 21 (((1st𝑧) ∈ On ∧ suc 𝑀 ∈ On) → (((1st𝑧) ⊆ ((1st𝑧) ∪ (2nd𝑧)) ∧ ((1st𝑧) ∪ (2nd𝑧)) ∈ suc 𝑀) → (1st𝑧) ∈ suc 𝑀))
165164imp 407 . . . . . . . . . . . . . . . . . . . 20 ((((1st𝑧) ∈ On ∧ suc 𝑀 ∈ On) ∧ ((1st𝑧) ⊆ ((1st𝑧) ∪ (2nd𝑧)) ∧ ((1st𝑧) ∪ (2nd𝑧)) ∈ suc 𝑀)) → (1st𝑧) ∈ suc 𝑀)
166115, 143, 145, 163, 165syl22anc 836 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑤 ∈ (𝑎 × 𝑎) ∧ 𝑧 ∈ (𝑄 “ {𝑤})) → (1st𝑧) ∈ suc 𝑀)
167 xp2nd 7716 . . . . . . . . . . . . . . . . . . . . . 22 (𝑧 ∈ (𝑎 × 𝑎) → (2nd𝑧) ∈ 𝑎)
168 onelon 6213 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑎 ∈ On ∧ (2nd𝑧) ∈ 𝑎) → (2nd𝑧) ∈ On)
169167, 168sylan2 592 . . . . . . . . . . . . . . . . . . . . 21 ((𝑎 ∈ On ∧ 𝑧 ∈ (𝑎 × 𝑎)) → (2nd𝑧) ∈ On)
170111, 108, 169syl2anc 584 . . . . . . . . . . . . . . . . . . . 20 ((𝜑𝑤 ∈ (𝑎 × 𝑎) ∧ 𝑧 ∈ (𝑄 “ {𝑤})) → (2nd𝑧) ∈ On)
171 ssun2 4152 . . . . . . . . . . . . . . . . . . . . 21 (2nd𝑧) ⊆ ((1st𝑧) ∪ (2nd𝑧))
172171a1i 11 . . . . . . . . . . . . . . . . . . . 20 ((𝜑𝑤 ∈ (𝑎 × 𝑎) ∧ 𝑧 ∈ (𝑄 “ {𝑤})) → (2nd𝑧) ⊆ ((1st𝑧) ∪ (2nd𝑧)))
173 ontr2 6235 . . . . . . . . . . . . . . . . . . . . 21 (((2nd𝑧) ∈ On ∧ suc 𝑀 ∈ On) → (((2nd𝑧) ⊆ ((1st𝑧) ∪ (2nd𝑧)) ∧ ((1st𝑧) ∪ (2nd𝑧)) ∈ suc 𝑀) → (2nd𝑧) ∈ suc 𝑀))
174173imp 407 . . . . . . . . . . . . . . . . . . . 20 ((((2nd𝑧) ∈ On ∧ suc 𝑀 ∈ On) ∧ ((2nd𝑧) ⊆ ((1st𝑧) ∪ (2nd𝑧)) ∧ ((1st𝑧) ∪ (2nd𝑧)) ∈ suc 𝑀)) → (2nd𝑧) ∈ suc 𝑀)
175170, 143, 172, 163, 174syl22anc 836 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑤 ∈ (𝑎 × 𝑎) ∧ 𝑧 ∈ (𝑄 “ {𝑤})) → (2nd𝑧) ∈ suc 𝑀)
176 elxp7 7718 . . . . . . . . . . . . . . . . . . . 20 (𝑧 ∈ (suc 𝑀 × suc 𝑀) ↔ (𝑧 ∈ (V × V) ∧ ((1st𝑧) ∈ suc 𝑀 ∧ (2nd𝑧) ∈ suc 𝑀)))
177176biimpri 229 . . . . . . . . . . . . . . . . . . 19 ((𝑧 ∈ (V × V) ∧ ((1st𝑧) ∈ suc 𝑀 ∧ (2nd𝑧) ∈ suc 𝑀)) → 𝑧 ∈ (suc 𝑀 × suc 𝑀))
178109, 166, 175, 177syl12anc 834 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑤 ∈ (𝑎 × 𝑎) ∧ 𝑧 ∈ (𝑄 “ {𝑤})) → 𝑧 ∈ (suc 𝑀 × suc 𝑀))
1791783expia 1115 . . . . . . . . . . . . . . . . 17 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝑧 ∈ (𝑄 “ {𝑤}) → 𝑧 ∈ (suc 𝑀 × suc 𝑀)))
180179ssrdv 3976 . . . . . . . . . . . . . . . 16 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝑄 “ {𝑤}) ⊆ (suc 𝑀 × suc 𝑀))
181 ssdomg 8547 . . . . . . . . . . . . . . . 16 ((suc 𝑀 × suc 𝑀) ∈ V → ((𝑄 “ {𝑤}) ⊆ (suc 𝑀 × suc 𝑀) → (𝑄 “ {𝑤}) ≼ (suc 𝑀 × suc 𝑀)))
18295, 180, 181mpsyl 68 . . . . . . . . . . . . . . 15 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝑄 “ {𝑤}) ≼ (suc 𝑀 × suc 𝑀))
183127adantr 481 . . . . . . . . . . . . . . . . 17 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → ω ⊆ 𝑎)
184 nnfi 8703 . . . . . . . . . . . . . . . . . . . 20 (suc 𝑀 ∈ ω → suc 𝑀 ∈ Fin)
185 xpfi 8781 . . . . . . . . . . . . . . . . . . . . . 22 ((suc 𝑀 ∈ Fin ∧ suc 𝑀 ∈ Fin) → (suc 𝑀 × suc 𝑀) ∈ Fin)
186185anidms 567 . . . . . . . . . . . . . . . . . . . . 21 (suc 𝑀 ∈ Fin → (suc 𝑀 × suc 𝑀) ∈ Fin)
187 isfinite 9107 . . . . . . . . . . . . . . . . . . . . 21 ((suc 𝑀 × suc 𝑀) ∈ Fin ↔ (suc 𝑀 × suc 𝑀) ≺ ω)
188186, 187sylib 219 . . . . . . . . . . . . . . . . . . . 20 (suc 𝑀 ∈ Fin → (suc 𝑀 × suc 𝑀) ≺ ω)
189184, 188syl 17 . . . . . . . . . . . . . . . . . . 19 (suc 𝑀 ∈ ω → (suc 𝑀 × suc 𝑀) ≺ ω)
190 ssdomg 8547 . . . . . . . . . . . . . . . . . . . 20 (𝑎 ∈ V → (ω ⊆ 𝑎 → ω ≼ 𝑎))
191190elv 3504 . . . . . . . . . . . . . . . . . . 19 (ω ⊆ 𝑎 → ω ≼ 𝑎)
192 sdomdomtr 8642 . . . . . . . . . . . . . . . . . . 19 (((suc 𝑀 × suc 𝑀) ≺ ω ∧ ω ≼ 𝑎) → (suc 𝑀 × suc 𝑀) ≺ 𝑎)
193189, 191, 192syl2an 595 . . . . . . . . . . . . . . . . . 18 ((suc 𝑀 ∈ ω ∧ ω ⊆ 𝑎) → (suc 𝑀 × suc 𝑀) ≺ 𝑎)
194193expcom 414 . . . . . . . . . . . . . . . . 17 (ω ⊆ 𝑎 → (suc 𝑀 ∈ ω → (suc 𝑀 × suc 𝑀) ≺ 𝑎))
195183, 194syl 17 . . . . . . . . . . . . . . . 16 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (suc 𝑀 ∈ ω → (suc 𝑀 × suc 𝑀) ≺ 𝑎))
196 breq1 5065 . . . . . . . . . . . . . . . . . 18 (𝑚 = suc 𝑀 → (𝑚𝑎 ↔ suc 𝑀𝑎))
197125adantr 481 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → ∀𝑚𝑎 𝑚𝑎)
198196, 197, 140rspcdva 3628 . . . . . . . . . . . . . . . . 17 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → suc 𝑀𝑎)
199 omelon 9101 . . . . . . . . . . . . . . . . . . 19 ω ∈ On
200 ontri1 6222 . . . . . . . . . . . . . . . . . . 19 ((ω ∈ On ∧ suc 𝑀 ∈ On) → (ω ⊆ suc 𝑀 ↔ ¬ suc 𝑀 ∈ ω))
201199, 142, 200sylancr 587 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (ω ⊆ suc 𝑀 ↔ ¬ suc 𝑀 ∈ ω))
202 sseq2 3996 . . . . . . . . . . . . . . . . . . . 20 (𝑚 = suc 𝑀 → (ω ⊆ 𝑚 ↔ ω ⊆ suc 𝑀))
203 xpeq12 5578 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑚 = suc 𝑀𝑚 = suc 𝑀) → (𝑚 × 𝑚) = (suc 𝑀 × suc 𝑀))
204203anidms 567 . . . . . . . . . . . . . . . . . . . . 21 (𝑚 = suc 𝑀 → (𝑚 × 𝑚) = (suc 𝑀 × suc 𝑀))
205 id 22 . . . . . . . . . . . . . . . . . . . . 21 (𝑚 = suc 𝑀𝑚 = suc 𝑀)
206204, 205breq12d 5075 . . . . . . . . . . . . . . . . . . . 20 (𝑚 = suc 𝑀 → ((𝑚 × 𝑚) ≈ 𝑚 ↔ (suc 𝑀 × suc 𝑀) ≈ suc 𝑀))
207202, 206imbi12d 346 . . . . . . . . . . . . . . . . . . 19 (𝑚 = suc 𝑀 → ((ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚) ↔ (ω ⊆ suc 𝑀 → (suc 𝑀 × suc 𝑀) ≈ suc 𝑀)))
208 simplr 765 . . . . . . . . . . . . . . . . . . . . 21 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ∀𝑚𝑎 𝑚𝑎)) → ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚))
20913, 208sylbi 218 . . . . . . . . . . . . . . . . . . . 20 (𝜑 → ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚))
210209adantr 481 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚))
211207, 210, 140rspcdva 3628 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (ω ⊆ suc 𝑀 → (suc 𝑀 × suc 𝑀) ≈ suc 𝑀))
212201, 211sylbird 261 . . . . . . . . . . . . . . . . 17 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (¬ suc 𝑀 ∈ ω → (suc 𝑀 × suc 𝑀) ≈ suc 𝑀))
213 ensdomtr 8645 . . . . . . . . . . . . . . . . . 18 (((suc 𝑀 × suc 𝑀) ≈ suc 𝑀 ∧ suc 𝑀𝑎) → (suc 𝑀 × suc 𝑀) ≺ 𝑎)
214213expcom 414 . . . . . . . . . . . . . . . . 17 (suc 𝑀𝑎 → ((suc 𝑀 × suc 𝑀) ≈ suc 𝑀 → (suc 𝑀 × suc 𝑀) ≺ 𝑎))
215198, 212, 214sylsyld 61 . . . . . . . . . . . . . . . 16 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (¬ suc 𝑀 ∈ ω → (suc 𝑀 × suc 𝑀) ≺ 𝑎))
216195, 215pm2.61d 180 . . . . . . . . . . . . . . 15 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (suc 𝑀 × suc 𝑀) ≺ 𝑎)
217 domsdomtr 8644 . . . . . . . . . . . . . . 15 (((𝑄 “ {𝑤}) ≼ (suc 𝑀 × suc 𝑀) ∧ (suc 𝑀 × suc 𝑀) ≺ 𝑎) → (𝑄 “ {𝑤}) ≺ 𝑎)
218182, 216, 217syl2anc 584 . . . . . . . . . . . . . 14 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝑄 “ {𝑤}) ≺ 𝑎)
219 ensdomtr 8645 . . . . . . . . . . . . . 14 (((𝐽𝑤) ≈ (𝑄 “ {𝑤}) ∧ (𝑄 “ {𝑤}) ≺ 𝑎) → (𝐽𝑤) ≺ 𝑎)
22088, 218, 219syl2anc 584 . . . . . . . . . . . . 13 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝐽𝑤) ≺ 𝑎)
221 ordelon 6212 . . . . . . . . . . . . . . 15 ((Ord dom 𝐽 ∧ (𝐽𝑤) ∈ dom 𝐽) → (𝐽𝑤) ∈ On)
22276, 79, 221sylancr 587 . . . . . . . . . . . . . 14 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝐽𝑤) ∈ On)
223 onenon 9370 . . . . . . . . . . . . . . 15 (𝑎 ∈ On → 𝑎 ∈ dom card)
224110, 223syl 17 . . . . . . . . . . . . . 14 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → 𝑎 ∈ dom card)
225 cardsdomel 9395 . . . . . . . . . . . . . 14 (((𝐽𝑤) ∈ On ∧ 𝑎 ∈ dom card) → ((𝐽𝑤) ≺ 𝑎 ↔ (𝐽𝑤) ∈ (card‘𝑎)))
226222, 224, 225syl2anc 584 . . . . . . . . . . . . 13 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → ((𝐽𝑤) ≺ 𝑎 ↔ (𝐽𝑤) ∈ (card‘𝑎)))
227220, 226mpbid 233 . . . . . . . . . . . 12 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝐽𝑤) ∈ (card‘𝑎))
228 eleq2 2905 . . . . . . . . . . . . . 14 ((card‘𝑎) = 𝑎 → ((𝐽𝑤) ∈ (card‘𝑎) ↔ (𝐽𝑤) ∈ 𝑎))
229128, 228sylbir 236 . . . . . . . . . . . . 13 ((𝑎 ∈ On ∧ ∀𝑚𝑎 𝑚𝑎) → ((𝐽𝑤) ∈ (card‘𝑎) ↔ (𝐽𝑤) ∈ 𝑎))
23017, 197, 229syl2an2r 681 . . . . . . . . . . . 12 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → ((𝐽𝑤) ∈ (card‘𝑎) ↔ (𝐽𝑤) ∈ 𝑎))
231227, 230mpbid 233 . . . . . . . . . . 11 ((𝜑𝑤 ∈ (𝑎 × 𝑎)) → (𝐽𝑤) ∈ 𝑎)
232231ralrimiva 3186 . . . . . . . . . 10 (𝜑 → ∀𝑤 ∈ (𝑎 × 𝑎)(𝐽𝑤) ∈ 𝑎)
233 fnfvrnss 6879 . . . . . . . . . . 11 ((𝐽 Fn (𝑎 × 𝑎) ∧ ∀𝑤 ∈ (𝑎 × 𝑎)(𝐽𝑤) ∈ 𝑎) → ran 𝐽𝑎)
234 ssdomg 8547 . . . . . . . . . . 11 (𝑎 ∈ V → (ran 𝐽𝑎 → ran 𝐽𝑎))
23514, 233, 234mpsyl 68 . . . . . . . . . 10 ((𝐽 Fn (𝑎 × 𝑎) ∧ ∀𝑤 ∈ (𝑎 × 𝑎)(𝐽𝑤) ∈ 𝑎) → ran 𝐽𝑎)
23645, 232, 235syl2anc 584 . . . . . . . . 9 (𝜑 → ran 𝐽𝑎)
237 endomtr 8559 . . . . . . . . 9 (((𝑎 × 𝑎) ≈ ran 𝐽 ∧ ran 𝐽𝑎) → (𝑎 × 𝑎) ≼ 𝑎)
23843, 236, 237syl2anc 584 . . . . . . . 8 (𝜑 → (𝑎 × 𝑎) ≼ 𝑎)
23913, 238sylbir 236 . . . . . . 7 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ∀𝑚𝑎 𝑚𝑎)) → (𝑎 × 𝑎) ≼ 𝑎)
240 df1o2 8110 . . . . . . . . . . . 12 1o = {∅}
241 1onn 8258 . . . . . . . . . . . 12 1o ∈ ω
242240, 241eqeltrri 2914 . . . . . . . . . . 11 {∅} ∈ ω
243 nnsdom 9109 . . . . . . . . . . 11 ({∅} ∈ ω → {∅} ≺ ω)
244 sdomdom 8529 . . . . . . . . . . 11 ({∅} ≺ ω → {∅} ≼ ω)
245242, 243, 244mp2b 10 . . . . . . . . . 10 {∅} ≼ ω
246 domtr 8554 . . . . . . . . . 10 (({∅} ≼ ω ∧ ω ≼ 𝑎) → {∅} ≼ 𝑎)
247245, 191, 246sylancr 587 . . . . . . . . 9 (ω ⊆ 𝑎 → {∅} ≼ 𝑎)
248 0ex 5207 . . . . . . . . . . . 12 ∅ ∈ V
24914, 248xpsnen 8593 . . . . . . . . . . 11 (𝑎 × {∅}) ≈ 𝑎
250249ensymi 8551 . . . . . . . . . 10 𝑎 ≈ (𝑎 × {∅})
25114xpdom2 8604 . . . . . . . . . 10 ({∅} ≼ 𝑎 → (𝑎 × {∅}) ≼ (𝑎 × 𝑎))
252 endomtr 8559 . . . . . . . . . 10 ((𝑎 ≈ (𝑎 × {∅}) ∧ (𝑎 × {∅}) ≼ (𝑎 × 𝑎)) → 𝑎 ≼ (𝑎 × 𝑎))
253250, 251, 252sylancr 587 . . . . . . . . 9 ({∅} ≼ 𝑎𝑎 ≼ (𝑎 × 𝑎))
254247, 253syl 17 . . . . . . . 8 (ω ⊆ 𝑎𝑎 ≼ (𝑎 × 𝑎))
255254ad2antrl 724 . . . . . . 7 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ∀𝑚𝑎 𝑚𝑎)) → 𝑎 ≼ (𝑎 × 𝑎))
256 sbth 8629 . . . . . . 7 (((𝑎 × 𝑎) ≼ 𝑎𝑎 ≼ (𝑎 × 𝑎)) → (𝑎 × 𝑎) ≈ 𝑎)
257239, 255, 256syl2anc 584 . . . . . 6 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ∀𝑚𝑎 𝑚𝑎)) → (𝑎 × 𝑎) ≈ 𝑎)
258257expr 457 . . . . 5 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ ω ⊆ 𝑎) → (∀𝑚𝑎 𝑚𝑎 → (𝑎 × 𝑎) ≈ 𝑎))
259 simplr 765 . . . . . . . 8 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ¬ ∀𝑚𝑎 𝑚𝑎)) → ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚))
260 simpll 763 . . . . . . . . 9 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ¬ ∀𝑚𝑎 𝑚𝑎)) → 𝑎 ∈ On)
261 simprr 769 . . . . . . . . 9 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ¬ ∀𝑚𝑎 𝑚𝑎)) → ¬ ∀𝑚𝑎 𝑚𝑎)
262 rexnal 3242 . . . . . . . . . 10 (∃𝑚𝑎 ¬ 𝑚𝑎 ↔ ¬ ∀𝑚𝑎 𝑚𝑎)
263 onelss 6230 . . . . . . . . . . . . 13 (𝑎 ∈ On → (𝑚𝑎𝑚𝑎))
264 ssdomg 8547 . . . . . . . . . . . . 13 (𝑎 ∈ On → (𝑚𝑎𝑚𝑎))
265263, 264syld 47 . . . . . . . . . . . 12 (𝑎 ∈ On → (𝑚𝑎𝑚𝑎))
266 bren2 8532 . . . . . . . . . . . . 13 (𝑚𝑎 ↔ (𝑚𝑎 ∧ ¬ 𝑚𝑎))
267266simplbi2 501 . . . . . . . . . . . 12 (𝑚𝑎 → (¬ 𝑚𝑎𝑚𝑎))
268265, 267syl6 35 . . . . . . . . . . 11 (𝑎 ∈ On → (𝑚𝑎 → (¬ 𝑚𝑎𝑚𝑎)))
269268reximdvai 3276 . . . . . . . . . 10 (𝑎 ∈ On → (∃𝑚𝑎 ¬ 𝑚𝑎 → ∃𝑚𝑎 𝑚𝑎))
270262, 269syl5bir 244 . . . . . . . . 9 (𝑎 ∈ On → (¬ ∀𝑚𝑎 𝑚𝑎 → ∃𝑚𝑎 𝑚𝑎))
271260, 261, 270sylc 65 . . . . . . . 8 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ¬ ∀𝑚𝑎 𝑚𝑎)) → ∃𝑚𝑎 𝑚𝑎)
272 r19.29 3258 . . . . . . . 8 ((∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚) ∧ ∃𝑚𝑎 𝑚𝑎) → ∃𝑚𝑎 ((ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚) ∧ 𝑚𝑎))
273259, 271, 272syl2anc 584 . . . . . . 7 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ¬ ∀𝑚𝑎 𝑚𝑎)) → ∃𝑚𝑎 ((ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚) ∧ 𝑚𝑎))
274 simprl 767 . . . . . . . 8 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ¬ ∀𝑚𝑎 𝑚𝑎)) → ω ⊆ 𝑎)
275 onelon 6213 . . . . . . . . . . . . . . . . 17 ((𝑎 ∈ On ∧ 𝑚𝑎) → 𝑚 ∈ On)
276 ensym 8550 . . . . . . . . . . . . . . . . . 18 (𝑚𝑎𝑎𝑚)
277 domentr 8560 . . . . . . . . . . . . . . . . . 18 ((ω ≼ 𝑎𝑎𝑚) → ω ≼ 𝑚)
278191, 276, 277syl2an 595 . . . . . . . . . . . . . . . . 17 ((ω ⊆ 𝑎𝑚𝑎) → ω ≼ 𝑚)
279 domnsym 8635 . . . . . . . . . . . . . . . . . . 19 (ω ≼ 𝑚 → ¬ 𝑚 ≺ ω)
280 nnsdom 9109 . . . . . . . . . . . . . . . . . . 19 (𝑚 ∈ ω → 𝑚 ≺ ω)
281279, 280nsyl 142 . . . . . . . . . . . . . . . . . 18 (ω ≼ 𝑚 → ¬ 𝑚 ∈ ω)
282 ontri1 6222 . . . . . . . . . . . . . . . . . . 19 ((ω ∈ On ∧ 𝑚 ∈ On) → (ω ⊆ 𝑚 ↔ ¬ 𝑚 ∈ ω))
283199, 282mpan 686 . . . . . . . . . . . . . . . . . 18 (𝑚 ∈ On → (ω ⊆ 𝑚 ↔ ¬ 𝑚 ∈ ω))
284281, 283syl5ibr 247 . . . . . . . . . . . . . . . . 17 (𝑚 ∈ On → (ω ≼ 𝑚 → ω ⊆ 𝑚))
285275, 278, 284syl2im 40 . . . . . . . . . . . . . . . 16 ((𝑎 ∈ On ∧ 𝑚𝑎) → ((ω ⊆ 𝑎𝑚𝑎) → ω ⊆ 𝑚))
286285expd 416 . . . . . . . . . . . . . . 15 ((𝑎 ∈ On ∧ 𝑚𝑎) → (ω ⊆ 𝑎 → (𝑚𝑎 → ω ⊆ 𝑚)))
287286impcom 408 . . . . . . . . . . . . . 14 ((ω ⊆ 𝑎 ∧ (𝑎 ∈ On ∧ 𝑚𝑎)) → (𝑚𝑎 → ω ⊆ 𝑚))
288287imim1d 82 . . . . . . . . . . . . 13 ((ω ⊆ 𝑎 ∧ (𝑎 ∈ On ∧ 𝑚𝑎)) → ((ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚) → (𝑚𝑎 → (𝑚 × 𝑚) ≈ 𝑚)))
289288imp32 419 . . . . . . . . . . . 12 (((ω ⊆ 𝑎 ∧ (𝑎 ∈ On ∧ 𝑚𝑎)) ∧ ((ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚) ∧ 𝑚𝑎)) → (𝑚 × 𝑚) ≈ 𝑚)
290 entr 8553 . . . . . . . . . . . . . . . 16 (((𝑚 × 𝑚) ≈ 𝑚𝑚𝑎) → (𝑚 × 𝑚) ≈ 𝑎)
291290ancoms 459 . . . . . . . . . . . . . . 15 ((𝑚𝑎 ∧ (𝑚 × 𝑚) ≈ 𝑚) → (𝑚 × 𝑚) ≈ 𝑎)
292 xpen 8672 . . . . . . . . . . . . . . . . 17 ((𝑎𝑚𝑎𝑚) → (𝑎 × 𝑎) ≈ (𝑚 × 𝑚))
293292anidms 567 . . . . . . . . . . . . . . . 16 (𝑎𝑚 → (𝑎 × 𝑎) ≈ (𝑚 × 𝑚))
294 entr 8553 . . . . . . . . . . . . . . . 16 (((𝑎 × 𝑎) ≈ (𝑚 × 𝑚) ∧ (𝑚 × 𝑚) ≈ 𝑎) → (𝑎 × 𝑎) ≈ 𝑎)
295293, 294sylan 580 . . . . . . . . . . . . . . 15 ((𝑎𝑚 ∧ (𝑚 × 𝑚) ≈ 𝑎) → (𝑎 × 𝑎) ≈ 𝑎)
296276, 291, 295syl2an2r 681 . . . . . . . . . . . . . 14 ((𝑚𝑎 ∧ (𝑚 × 𝑚) ≈ 𝑚) → (𝑎 × 𝑎) ≈ 𝑎)
297296ex 413 . . . . . . . . . . . . 13 (𝑚𝑎 → ((𝑚 × 𝑚) ≈ 𝑚 → (𝑎 × 𝑎) ≈ 𝑎))
298297ad2antll 725 . . . . . . . . . . . 12 (((ω ⊆ 𝑎 ∧ (𝑎 ∈ On ∧ 𝑚𝑎)) ∧ ((ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚) ∧ 𝑚𝑎)) → ((𝑚 × 𝑚) ≈ 𝑚 → (𝑎 × 𝑎) ≈ 𝑎))
299289, 298mpd 15 . . . . . . . . . . 11 (((ω ⊆ 𝑎 ∧ (𝑎 ∈ On ∧ 𝑚𝑎)) ∧ ((ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚) ∧ 𝑚𝑎)) → (𝑎 × 𝑎) ≈ 𝑎)
300299ex 413 . . . . . . . . . 10 ((ω ⊆ 𝑎 ∧ (𝑎 ∈ On ∧ 𝑚𝑎)) → (((ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚) ∧ 𝑚𝑎) → (𝑎 × 𝑎) ≈ 𝑎))
301300expr 457 . . . . . . . . 9 ((ω ⊆ 𝑎𝑎 ∈ On) → (𝑚𝑎 → (((ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚) ∧ 𝑚𝑎) → (𝑎 × 𝑎) ≈ 𝑎)))
302301rexlimdv 3287 . . . . . . . 8 ((ω ⊆ 𝑎𝑎 ∈ On) → (∃𝑚𝑎 ((ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚) ∧ 𝑚𝑎) → (𝑎 × 𝑎) ≈ 𝑎))
303274, 260, 302syl2anc 584 . . . . . . 7 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ¬ ∀𝑚𝑎 𝑚𝑎)) → (∃𝑚𝑎 ((ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚) ∧ 𝑚𝑎) → (𝑎 × 𝑎) ≈ 𝑎))
304273, 303mpd 15 . . . . . 6 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ (ω ⊆ 𝑎 ∧ ¬ ∀𝑚𝑎 𝑚𝑎)) → (𝑎 × 𝑎) ≈ 𝑎)
305304expr 457 . . . . 5 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ ω ⊆ 𝑎) → (¬ ∀𝑚𝑎 𝑚𝑎 → (𝑎 × 𝑎) ≈ 𝑎))
306258, 305pm2.61d 180 . . . 4 (((𝑎 ∈ On ∧ ∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚)) ∧ ω ⊆ 𝑎) → (𝑎 × 𝑎) ≈ 𝑎)
307306exp31 420 . . 3 (𝑎 ∈ On → (∀𝑚𝑎 (ω ⊆ 𝑚 → (𝑚 × 𝑚) ≈ 𝑚) → (ω ⊆ 𝑎 → (𝑎 × 𝑎) ≈ 𝑎)))
3086, 12, 307tfis3 7563 . 2 (𝐴 ∈ On → (ω ⊆ 𝐴 → (𝐴 × 𝐴) ≈ 𝐴))
309308imp 407 1 ((𝐴 ∈ On ∧ ω ⊆ 𝐴) → (𝐴 × 𝐴) ≈ 𝐴)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 207  wa 396  wo 843  w3a 1081   = wceq 1530  wcel 2107  wral 3142  wrex 3143  Vcvv 3499  cun 3937  cin 3938  wss 3939  c0 4294  {csn 4563  cop 4569   class class class wbr 5062  {copab 5124   E cep 5462   Se wse 5510   We wwe 5511   × cxp 5551  ccnv 5552  dom cdm 5553  ran crn 5554  cres 5555  cima 5556  Ord word 6187  Oncon0 6188  Lim wlim 6189  suc csuc 6190   Fn wfn 6346  wf 6347  1-1wf1 6348  1-1-ontowf1o 6350  cfv 6351   Isom wiso 6352  ωcom 7571  1st c1st 7681  2nd c2nd 7682  1oc1o 8089  cen 8498  cdom 8499  csdm 8500  Fincfn 8501  OrdIsocoi 8965  cardccrd 9356
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-ext 2797  ax-rep 5186  ax-sep 5199  ax-nul 5206  ax-pow 5262  ax-pr 5325  ax-un 7454  ax-inf2 9096
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 2619  df-eu 2651  df-clab 2804  df-cleq 2818  df-clel 2897  df-nfc 2967  df-ne 3021  df-ral 3147  df-rex 3148  df-reu 3149  df-rmo 3150  df-rab 3151  df-v 3501  df-sbc 3776  df-csb 3887  df-dif 3942  df-un 3944  df-in 3946  df-ss 3955  df-pss 3957  df-nul 4295  df-if 4470  df-pw 4543  df-sn 4564  df-pr 4566  df-tp 4568  df-op 4570  df-uni 4837  df-int 4874  df-iun 4918  df-br 5063  df-opab 5125  df-mpt 5143  df-tr 5169  df-id 5458  df-eprel 5463  df-po 5472  df-so 5473  df-fr 5512  df-se 5513  df-we 5514  df-xp 5559  df-rel 5560  df-cnv 5561  df-co 5562  df-dm 5563  df-rn 5564  df-res 5565  df-ima 5566  df-pred 6145  df-ord 6191  df-on 6192  df-lim 6193  df-suc 6194  df-iota 6311  df-fun 6353  df-fn 6354  df-f 6355  df-f1 6356  df-fo 6357  df-f1o 6358  df-fv 6359  df-isom 6360  df-riota 7109  df-ov 7154  df-oprab 7155  df-mpo 7156  df-om 7572  df-1st 7683  df-2nd 7684  df-wrecs 7941  df-recs 8002  df-rdg 8040  df-1o 8096  df-oadd 8100  df-er 8282  df-en 8502  df-dom 8503  df-sdom 8504  df-fin 8505  df-oi 8966  df-card 9360
This theorem is referenced by:  infxpen  9432
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