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Theorem ttukeylem5 9620
Description: Lemma for ttukey 9625. The 𝐺 function forms a (transfinitely long) chain of inclusions. (Contributed by Mario Carneiro, 15-May-2015.)
Hypotheses
Ref Expression
ttukeylem.1 (𝜑𝐹:(card‘( 𝐴𝐵))–1-1-onto→( 𝐴𝐵))
ttukeylem.2 (𝜑𝐵𝐴)
ttukeylem.3 (𝜑 → ∀𝑥(𝑥𝐴 ↔ (𝒫 𝑥 ∩ Fin) ⊆ 𝐴))
ttukeylem.4 𝐺 = recs((𝑧 ∈ V ↦ if(dom 𝑧 = dom 𝑧, if(dom 𝑧 = ∅, 𝐵, ran 𝑧), ((𝑧 dom 𝑧) ∪ if(((𝑧 dom 𝑧) ∪ {(𝐹 dom 𝑧)}) ∈ 𝐴, {(𝐹 dom 𝑧)}, ∅)))))
Assertion
Ref Expression
ttukeylem5 ((𝜑 ∧ (𝐶 ∈ On ∧ 𝐷 ∈ On ∧ 𝐶𝐷)) → (𝐺𝐶) ⊆ (𝐺𝐷))
Distinct variable groups:   𝑥,𝑧,𝐶   𝑥,𝐷   𝑥,𝐺,𝑧   𝜑,𝑧   𝑥,𝐴,𝑧   𝑥,𝐵,𝑧   𝑥,𝐹,𝑧
Allowed substitution hints:   𝜑(𝑥)   𝐷(𝑧)

Proof of Theorem ttukeylem5
Dummy variables 𝑎 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 sseq2 3824 . . . . . 6 (𝑦 = 𝑎 → (𝐶𝑦𝐶𝑎))
2 fveq2 6408 . . . . . . 7 (𝑦 = 𝑎 → (𝐺𝑦) = (𝐺𝑎))
32sseq2d 3830 . . . . . 6 (𝑦 = 𝑎 → ((𝐺𝐶) ⊆ (𝐺𝑦) ↔ (𝐺𝐶) ⊆ (𝐺𝑎)))
41, 3imbi12d 335 . . . . 5 (𝑦 = 𝑎 → ((𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦)) ↔ (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))))
54imbi2d 331 . . . 4 (𝑦 = 𝑎 → (((𝜑𝐶 ∈ On) → (𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦))) ↔ ((𝜑𝐶 ∈ On) → (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)))))
6 sseq2 3824 . . . . . 6 (𝑦 = 𝐷 → (𝐶𝑦𝐶𝐷))
7 fveq2 6408 . . . . . . 7 (𝑦 = 𝐷 → (𝐺𝑦) = (𝐺𝐷))
87sseq2d 3830 . . . . . 6 (𝑦 = 𝐷 → ((𝐺𝐶) ⊆ (𝐺𝑦) ↔ (𝐺𝐶) ⊆ (𝐺𝐷)))
96, 8imbi12d 335 . . . . 5 (𝑦 = 𝐷 → ((𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦)) ↔ (𝐶𝐷 → (𝐺𝐶) ⊆ (𝐺𝐷))))
109imbi2d 331 . . . 4 (𝑦 = 𝐷 → (((𝜑𝐶 ∈ On) → (𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦))) ↔ ((𝜑𝐶 ∈ On) → (𝐶𝐷 → (𝐺𝐶) ⊆ (𝐺𝐷)))))
11 r19.21v 3148 . . . . 5 (∀𝑎𝑦 ((𝜑𝐶 ∈ On) → (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) ↔ ((𝜑𝐶 ∈ On) → ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))))
12 simpllr 784 . . . . . . . . . 10 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → 𝐶 ∈ On)
13 simplr 776 . . . . . . . . . 10 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → 𝑦 ∈ On)
14 onsseleq 5978 . . . . . . . . . 10 ((𝐶 ∈ On ∧ 𝑦 ∈ On) → (𝐶𝑦 ↔ (𝐶𝑦𝐶 = 𝑦)))
1512, 13, 14syl2anc 575 . . . . . . . . 9 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → (𝐶𝑦 ↔ (𝐶𝑦𝐶 = 𝑦)))
16 sseq2 3824 . . . . . . . . . . . . 13 (if(𝑦 = ∅, 𝐵, (𝐺𝑦)) = if(𝑦 = 𝑦, if(𝑦 = ∅, 𝐵, (𝐺𝑦)), ((𝐺 𝑦) ∪ if(((𝐺 𝑦) ∪ {(𝐹 𝑦)}) ∈ 𝐴, {(𝐹 𝑦)}, ∅))) → ((𝐺𝐶) ⊆ if(𝑦 = ∅, 𝐵, (𝐺𝑦)) ↔ (𝐺𝐶) ⊆ if(𝑦 = 𝑦, if(𝑦 = ∅, 𝐵, (𝐺𝑦)), ((𝐺 𝑦) ∪ if(((𝐺 𝑦) ∪ {(𝐹 𝑦)}) ∈ 𝐴, {(𝐹 𝑦)}, ∅)))))
17 sseq2 3824 . . . . . . . . . . . . 13 (((𝐺 𝑦) ∪ if(((𝐺 𝑦) ∪ {(𝐹 𝑦)}) ∈ 𝐴, {(𝐹 𝑦)}, ∅)) = if(𝑦 = 𝑦, if(𝑦 = ∅, 𝐵, (𝐺𝑦)), ((𝐺 𝑦) ∪ if(((𝐺 𝑦) ∪ {(𝐹 𝑦)}) ∈ 𝐴, {(𝐹 𝑦)}, ∅))) → ((𝐺𝐶) ⊆ ((𝐺 𝑦) ∪ if(((𝐺 𝑦) ∪ {(𝐹 𝑦)}) ∈ 𝐴, {(𝐹 𝑦)}, ∅)) ↔ (𝐺𝐶) ⊆ if(𝑦 = 𝑦, if(𝑦 = ∅, 𝐵, (𝐺𝑦)), ((𝐺 𝑦) ∪ if(((𝐺 𝑦) ∪ {(𝐹 𝑦)}) ∈ 𝐴, {(𝐹 𝑦)}, ∅)))))
18 ttukeylem.4 . . . . . . . . . . . . . . . . . . 19 𝐺 = recs((𝑧 ∈ V ↦ if(dom 𝑧 = dom 𝑧, if(dom 𝑧 = ∅, 𝐵, ran 𝑧), ((𝑧 dom 𝑧) ∪ if(((𝑧 dom 𝑧) ∪ {(𝐹 dom 𝑧)}) ∈ 𝐴, {(𝐹 dom 𝑧)}, ∅)))))
1918tfr1 7729 . . . . . . . . . . . . . . . . . 18 𝐺 Fn On
2019a1i 11 . . . . . . . . . . . . . . . . 17 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → 𝐺 Fn On)
21 simplr 776 . . . . . . . . . . . . . . . . . 18 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → 𝑦 ∈ On)
22 onss 7220 . . . . . . . . . . . . . . . . . 18 (𝑦 ∈ On → 𝑦 ⊆ On)
2321, 22syl 17 . . . . . . . . . . . . . . . . 17 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → 𝑦 ⊆ On)
24 simprr 780 . . . . . . . . . . . . . . . . 17 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → 𝐶𝑦)
25 fnfvima 6721 . . . . . . . . . . . . . . . . 17 ((𝐺 Fn On ∧ 𝑦 ⊆ On ∧ 𝐶𝑦) → (𝐺𝐶) ∈ (𝐺𝑦))
2620, 23, 24, 25syl3anc 1483 . . . . . . . . . . . . . . . 16 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → (𝐺𝐶) ∈ (𝐺𝑦))
27 elssuni 4661 . . . . . . . . . . . . . . . 16 ((𝐺𝐶) ∈ (𝐺𝑦) → (𝐺𝐶) ⊆ (𝐺𝑦))
2826, 27syl 17 . . . . . . . . . . . . . . 15 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → (𝐺𝐶) ⊆ (𝐺𝑦))
29 n0i 4121 . . . . . . . . . . . . . . . 16 (𝐶𝑦 → ¬ 𝑦 = ∅)
30 iffalse 4288 . . . . . . . . . . . . . . . 16 𝑦 = ∅ → if(𝑦 = ∅, 𝐵, (𝐺𝑦)) = (𝐺𝑦))
3124, 29, 303syl 18 . . . . . . . . . . . . . . 15 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → if(𝑦 = ∅, 𝐵, (𝐺𝑦)) = (𝐺𝑦))
3228, 31sseqtr4d 3839 . . . . . . . . . . . . . 14 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → (𝐺𝐶) ⊆ if(𝑦 = ∅, 𝐵, (𝐺𝑦)))
3332adantr 468 . . . . . . . . . . . . 13 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ 𝑦 = 𝑦) → (𝐺𝐶) ⊆ if(𝑦 = ∅, 𝐵, (𝐺𝑦)))
3424adantr 468 . . . . . . . . . . . . . . . 16 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ ¬ 𝑦 = 𝑦) → 𝐶𝑦)
35 elssuni 4661 . . . . . . . . . . . . . . . 16 (𝐶𝑦𝐶 𝑦)
3634, 35syl 17 . . . . . . . . . . . . . . 15 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ ¬ 𝑦 = 𝑦) → 𝐶 𝑦)
37 sseq2 3824 . . . . . . . . . . . . . . . . 17 (𝑎 = 𝑦 → (𝐶𝑎𝐶 𝑦))
38 fveq2 6408 . . . . . . . . . . . . . . . . . 18 (𝑎 = 𝑦 → (𝐺𝑎) = (𝐺 𝑦))
3938sseq2d 3830 . . . . . . . . . . . . . . . . 17 (𝑎 = 𝑦 → ((𝐺𝐶) ⊆ (𝐺𝑎) ↔ (𝐺𝐶) ⊆ (𝐺 𝑦)))
4037, 39imbi12d 335 . . . . . . . . . . . . . . . 16 (𝑎 = 𝑦 → ((𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ↔ (𝐶 𝑦 → (𝐺𝐶) ⊆ (𝐺 𝑦))))
41 simplrl 786 . . . . . . . . . . . . . . . 16 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ ¬ 𝑦 = 𝑦) → ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)))
42 vuniex 7184 . . . . . . . . . . . . . . . . . 18 𝑦 ∈ V
4342sucid 6017 . . . . . . . . . . . . . . . . 17 𝑦 ∈ suc 𝑦
44 eloni 5946 . . . . . . . . . . . . . . . . . . 19 (𝑦 ∈ On → Ord 𝑦)
45 orduniorsuc 7260 . . . . . . . . . . . . . . . . . . 19 (Ord 𝑦 → (𝑦 = 𝑦𝑦 = suc 𝑦))
4621, 44, 453syl 18 . . . . . . . . . . . . . . . . . 18 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → (𝑦 = 𝑦𝑦 = suc 𝑦))
4746orcanai 1016 . . . . . . . . . . . . . . . . 17 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ ¬ 𝑦 = 𝑦) → 𝑦 = suc 𝑦)
4843, 47syl5eleqr 2892 . . . . . . . . . . . . . . . 16 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ ¬ 𝑦 = 𝑦) → 𝑦𝑦)
4940, 41, 48rspcdva 3508 . . . . . . . . . . . . . . 15 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ ¬ 𝑦 = 𝑦) → (𝐶 𝑦 → (𝐺𝐶) ⊆ (𝐺 𝑦)))
5036, 49mpd 15 . . . . . . . . . . . . . 14 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ ¬ 𝑦 = 𝑦) → (𝐺𝐶) ⊆ (𝐺 𝑦))
51 ssun1 3975 . . . . . . . . . . . . . 14 (𝐺 𝑦) ⊆ ((𝐺 𝑦) ∪ if(((𝐺 𝑦) ∪ {(𝐹 𝑦)}) ∈ 𝐴, {(𝐹 𝑦)}, ∅))
5250, 51syl6ss 3810 . . . . . . . . . . . . 13 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ ¬ 𝑦 = 𝑦) → (𝐺𝐶) ⊆ ((𝐺 𝑦) ∪ if(((𝐺 𝑦) ∪ {(𝐹 𝑦)}) ∈ 𝐴, {(𝐹 𝑦)}, ∅)))
5316, 17, 33, 52ifbothda 4316 . . . . . . . . . . . 12 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → (𝐺𝐶) ⊆ if(𝑦 = 𝑦, if(𝑦 = ∅, 𝐵, (𝐺𝑦)), ((𝐺 𝑦) ∪ if(((𝐺 𝑦) ∪ {(𝐹 𝑦)}) ∈ 𝐴, {(𝐹 𝑦)}, ∅))))
54 simplll 782 . . . . . . . . . . . . 13 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → 𝜑)
55 ttukeylem.1 . . . . . . . . . . . . . 14 (𝜑𝐹:(card‘( 𝐴𝐵))–1-1-onto→( 𝐴𝐵))
56 ttukeylem.2 . . . . . . . . . . . . . 14 (𝜑𝐵𝐴)
57 ttukeylem.3 . . . . . . . . . . . . . 14 (𝜑 → ∀𝑥(𝑥𝐴 ↔ (𝒫 𝑥 ∩ Fin) ⊆ 𝐴))
5855, 56, 57, 18ttukeylem3 9618 . . . . . . . . . . . . 13 ((𝜑𝑦 ∈ On) → (𝐺𝑦) = if(𝑦 = 𝑦, if(𝑦 = ∅, 𝐵, (𝐺𝑦)), ((𝐺 𝑦) ∪ if(((𝐺 𝑦) ∪ {(𝐹 𝑦)}) ∈ 𝐴, {(𝐹 𝑦)}, ∅))))
5954, 21, 58syl2anc 575 . . . . . . . . . . . 12 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → (𝐺𝑦) = if(𝑦 = 𝑦, if(𝑦 = ∅, 𝐵, (𝐺𝑦)), ((𝐺 𝑦) ∪ if(((𝐺 𝑦) ∪ {(𝐹 𝑦)}) ∈ 𝐴, {(𝐹 𝑦)}, ∅))))
6053, 59sseqtr4d 3839 . . . . . . . . . . 11 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → (𝐺𝐶) ⊆ (𝐺𝑦))
6160expr 446 . . . . . . . . . 10 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → (𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦)))
62 fveq2 6408 . . . . . . . . . . . 12 (𝐶 = 𝑦 → (𝐺𝐶) = (𝐺𝑦))
63 eqimss 3854 . . . . . . . . . . . 12 ((𝐺𝐶) = (𝐺𝑦) → (𝐺𝐶) ⊆ (𝐺𝑦))
6462, 63syl 17 . . . . . . . . . . 11 (𝐶 = 𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦))
6564a1i 11 . . . . . . . . . 10 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → (𝐶 = 𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦)))
6661, 65jaod 877 . . . . . . . . 9 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → ((𝐶𝑦𝐶 = 𝑦) → (𝐺𝐶) ⊆ (𝐺𝑦)))
6715, 66sylbid 231 . . . . . . . 8 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → (𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦)))
6867ex 399 . . . . . . 7 (((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) → (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) → (𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦))))
6968expcom 400 . . . . . 6 (𝑦 ∈ On → ((𝜑𝐶 ∈ On) → (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) → (𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦)))))
7069a2d 29 . . . . 5 (𝑦 ∈ On → (((𝜑𝐶 ∈ On) → ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → ((𝜑𝐶 ∈ On) → (𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦)))))
7111, 70syl5bi 233 . . . 4 (𝑦 ∈ On → (∀𝑎𝑦 ((𝜑𝐶 ∈ On) → (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → ((𝜑𝐶 ∈ On) → (𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦)))))
725, 10, 71tfis3 7287 . . 3 (𝐷 ∈ On → ((𝜑𝐶 ∈ On) → (𝐶𝐷 → (𝐺𝐶) ⊆ (𝐺𝐷))))
7372expdcom 401 . 2 (𝜑 → (𝐶 ∈ On → (𝐷 ∈ On → (𝐶𝐷 → (𝐺𝐶) ⊆ (𝐺𝐷)))))
74733imp2 1451 1 ((𝜑 ∧ (𝐶 ∈ On ∧ 𝐷 ∈ On ∧ 𝐶𝐷)) → (𝐺𝐶) ⊆ (𝐺𝐷))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 197  wa 384  wo 865  w3a 1100  wal 1635   = wceq 1637  wcel 2156  wral 3096  Vcvv 3391  cdif 3766  cun 3767  cin 3768  wss 3769  c0 4116  ifcif 4279  𝒫 cpw 4351  {csn 4370   cuni 4630  cmpt 4923  dom cdm 5311  ran crn 5312  cima 5314  Ord word 5935  Oncon0 5936  suc csuc 5938   Fn wfn 6096  1-1-ontowf1o 6100  cfv 6101  recscrecs 7703  Fincfn 8192  cardccrd 9044
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1877  ax-4 1894  ax-5 2001  ax-6 2068  ax-7 2104  ax-8 2158  ax-9 2165  ax-10 2185  ax-11 2201  ax-12 2214  ax-13 2420  ax-ext 2784  ax-rep 4964  ax-sep 4975  ax-nul 4983  ax-pow 5035  ax-pr 5096  ax-un 7179
This theorem depends on definitions:  df-bi 198  df-an 385  df-or 866  df-3or 1101  df-3an 1102  df-tru 1641  df-ex 1860  df-nf 1864  df-sb 2061  df-eu 2634  df-mo 2635  df-clab 2793  df-cleq 2799  df-clel 2802  df-nfc 2937  df-ne 2979  df-ral 3101  df-rex 3102  df-reu 3103  df-rab 3105  df-v 3393  df-sbc 3634  df-csb 3729  df-dif 3772  df-un 3774  df-in 3776  df-ss 3783  df-pss 3785  df-nul 4117  df-if 4280  df-sn 4371  df-pr 4373  df-tp 4375  df-op 4377  df-uni 4631  df-iun 4714  df-br 4845  df-opab 4907  df-mpt 4924  df-tr 4947  df-id 5219  df-eprel 5224  df-po 5232  df-so 5233  df-fr 5270  df-we 5272  df-xp 5317  df-rel 5318  df-cnv 5319  df-co 5320  df-dm 5321  df-rn 5322  df-res 5323  df-ima 5324  df-pred 5893  df-ord 5939  df-on 5940  df-suc 5942  df-iota 6064  df-fun 6103  df-fn 6104  df-f 6105  df-f1 6106  df-fo 6107  df-f1o 6108  df-fv 6109  df-wrecs 7642  df-recs 7704
This theorem is referenced by:  ttukeylem6  9621  ttukeylem7  9622
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