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Theorem ttukeylem5 9218
 Description: Lemma for ttukey 9223. 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 3590 . . . . . 6 (𝑦 = 𝑎 → (𝐶𝑦𝐶𝑎))
2 fveq2 6103 . . . . . . 7 (𝑦 = 𝑎 → (𝐺𝑦) = (𝐺𝑎))
32sseq2d 3596 . . . . . 6 (𝑦 = 𝑎 → ((𝐺𝐶) ⊆ (𝐺𝑦) ↔ (𝐺𝐶) ⊆ (𝐺𝑎)))
41, 3imbi12d 333 . . . . 5 (𝑦 = 𝑎 → ((𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦)) ↔ (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))))
54imbi2d 329 . . . 4 (𝑦 = 𝑎 → (((𝜑𝐶 ∈ On) → (𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦))) ↔ ((𝜑𝐶 ∈ On) → (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)))))
6 sseq2 3590 . . . . . 6 (𝑦 = 𝐷 → (𝐶𝑦𝐶𝐷))
7 fveq2 6103 . . . . . . 7 (𝑦 = 𝐷 → (𝐺𝑦) = (𝐺𝐷))
87sseq2d 3596 . . . . . 6 (𝑦 = 𝐷 → ((𝐺𝐶) ⊆ (𝐺𝑦) ↔ (𝐺𝐶) ⊆ (𝐺𝐷)))
96, 8imbi12d 333 . . . . 5 (𝑦 = 𝐷 → ((𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦)) ↔ (𝐶𝐷 → (𝐺𝐶) ⊆ (𝐺𝐷))))
109imbi2d 329 . . . 4 (𝑦 = 𝐷 → (((𝜑𝐶 ∈ On) → (𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦))) ↔ ((𝜑𝐶 ∈ On) → (𝐶𝐷 → (𝐺𝐶) ⊆ (𝐺𝐷)))))
11 r19.21v 2943 . . . . 5 (∀𝑎𝑦 ((𝜑𝐶 ∈ On) → (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) ↔ ((𝜑𝐶 ∈ On) → ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))))
12 simpllr 795 . . . . . . . . . 10 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → 𝐶 ∈ On)
13 simplr 788 . . . . . . . . . 10 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → 𝑦 ∈ On)
14 onsseleq 5682 . . . . . . . . . 10 ((𝐶 ∈ On ∧ 𝑦 ∈ On) → (𝐶𝑦 ↔ (𝐶𝑦𝐶 = 𝑦)))
1512, 13, 14syl2anc 691 . . . . . . . . 9 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → (𝐶𝑦 ↔ (𝐶𝑦𝐶 = 𝑦)))
16 sseq2 3590 . . . . . . . . . . . . 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 3590 . . . . . . . . . . . . 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 7380 . . . . . . . . . . . . . . . . . 18 𝐺 Fn On
2019a1i 11 . . . . . . . . . . . . . . . . 17 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → 𝐺 Fn On)
21 simplr 788 . . . . . . . . . . . . . . . . . 18 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → 𝑦 ∈ On)
22 onss 6882 . . . . . . . . . . . . . . . . . 18 (𝑦 ∈ On → 𝑦 ⊆ On)
2321, 22syl 17 . . . . . . . . . . . . . . . . 17 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → 𝑦 ⊆ On)
24 simprr 792 . . . . . . . . . . . . . . . . 17 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → 𝐶𝑦)
25 fnfvima 6400 . . . . . . . . . . . . . . . . 17 ((𝐺 Fn On ∧ 𝑦 ⊆ On ∧ 𝐶𝑦) → (𝐺𝐶) ∈ (𝐺𝑦))
2620, 23, 24, 25syl3anc 1318 . . . . . . . . . . . . . . . 16 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → (𝐺𝐶) ∈ (𝐺𝑦))
27 elssuni 4403 . . . . . . . . . . . . . . . 16 ((𝐺𝐶) ∈ (𝐺𝑦) → (𝐺𝐶) ⊆ (𝐺𝑦))
2826, 27syl 17 . . . . . . . . . . . . . . 15 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → (𝐺𝐶) ⊆ (𝐺𝑦))
29 n0i 3879 . . . . . . . . . . . . . . . 16 (𝐶𝑦 → ¬ 𝑦 = ∅)
30 iffalse 4045 . . . . . . . . . . . . . . . 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 3605 . . . . . . . . . . . . . 14 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → (𝐺𝐶) ⊆ if(𝑦 = ∅, 𝐵, (𝐺𝑦)))
3332adantr 480 . . . . . . . . . . . . 13 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ 𝑦 = 𝑦) → (𝐺𝐶) ⊆ if(𝑦 = ∅, 𝐵, (𝐺𝑦)))
34 vuniex 6852 . . . . . . . . . . . . . . . . 17 𝑦 ∈ V
3534sucid 5721 . . . . . . . . . . . . . . . 16 𝑦 ∈ suc 𝑦
36 eloni 5650 . . . . . . . . . . . . . . . . . 18 (𝑦 ∈ On → Ord 𝑦)
37 orduniorsuc 6922 . . . . . . . . . . . . . . . . . 18 (Ord 𝑦 → (𝑦 = 𝑦𝑦 = suc 𝑦))
3821, 36, 373syl 18 . . . . . . . . . . . . . . . . 17 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → (𝑦 = 𝑦𝑦 = suc 𝑦))
3938orcanai 950 . . . . . . . . . . . . . . . 16 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ ¬ 𝑦 = 𝑦) → 𝑦 = suc 𝑦)
4035, 39syl5eleqr 2695 . . . . . . . . . . . . . . 15 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ ¬ 𝑦 = 𝑦) → 𝑦𝑦)
41 simplrl 796 . . . . . . . . . . . . . . 15 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ ¬ 𝑦 = 𝑦) → ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)))
4224adantr 480 . . . . . . . . . . . . . . . 16 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ ¬ 𝑦 = 𝑦) → 𝐶𝑦)
43 elssuni 4403 . . . . . . . . . . . . . . . 16 (𝐶𝑦𝐶 𝑦)
4442, 43syl 17 . . . . . . . . . . . . . . 15 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ ¬ 𝑦 = 𝑦) → 𝐶 𝑦)
45 sseq2 3590 . . . . . . . . . . . . . . . . 17 (𝑎 = 𝑦 → (𝐶𝑎𝐶 𝑦))
46 fveq2 6103 . . . . . . . . . . . . . . . . . 18 (𝑎 = 𝑦 → (𝐺𝑎) = (𝐺 𝑦))
4746sseq2d 3596 . . . . . . . . . . . . . . . . 17 (𝑎 = 𝑦 → ((𝐺𝐶) ⊆ (𝐺𝑎) ↔ (𝐺𝐶) ⊆ (𝐺 𝑦)))
4845, 47imbi12d 333 . . . . . . . . . . . . . . . 16 (𝑎 = 𝑦 → ((𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ↔ (𝐶 𝑦 → (𝐺𝐶) ⊆ (𝐺 𝑦))))
4948rspcv 3278 . . . . . . . . . . . . . . 15 ( 𝑦𝑦 → (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) → (𝐶 𝑦 → (𝐺𝐶) ⊆ (𝐺 𝑦))))
5040, 41, 44, 49syl3c 64 . . . . . . . . . . . . . 14 (((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) ∧ ¬ 𝑦 = 𝑦) → (𝐺𝐶) ⊆ (𝐺 𝑦))
51 ssun1 3738 . . . . . . . . . . . . . 14 (𝐺 𝑦) ⊆ ((𝐺 𝑦) ∪ if(((𝐺 𝑦) ∪ {(𝐹 𝑦)}) ∈ 𝐴, {(𝐹 𝑦)}, ∅))
5250, 51syl6ss 3580 . . . . . . . . . . . . 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 4073 . . . . . . . . . . . 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 794 . . . . . . . . . . . . 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 9216 . . . . . . . . . . . . 13 ((𝜑𝑦 ∈ On) → (𝐺𝑦) = if(𝑦 = 𝑦, if(𝑦 = ∅, 𝐵, (𝐺𝑦)), ((𝐺 𝑦) ∪ if(((𝐺 𝑦) ∪ {(𝐹 𝑦)}) ∈ 𝐴, {(𝐹 𝑦)}, ∅))))
5954, 21, 58syl2anc 691 . . . . . . . . . . . 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 3605 . . . . . . . . . . 11 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) ∧ 𝐶𝑦)) → (𝐺𝐶) ⊆ (𝐺𝑦))
6160expr 641 . . . . . . . . . 10 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → (𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦)))
62 fveq2 6103 . . . . . . . . . . . 12 (𝐶 = 𝑦 → (𝐺𝐶) = (𝐺𝑦))
63 eqimss 3620 . . . . . . . . . . . 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 394 . . . . . . . . 9 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → ((𝐶𝑦𝐶 = 𝑦) → (𝐺𝐶) ⊆ (𝐺𝑦)))
6715, 66sylbid 229 . . . . . . . 8 ((((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) ∧ ∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → (𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦)))
6867ex 449 . . . . . . 7 (((𝜑𝐶 ∈ On) ∧ 𝑦 ∈ On) → (∀𝑎𝑦 (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎)) → (𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦))))
6968expcom 450 . . . . . 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 231 . . . 4 (𝑦 ∈ On → (∀𝑎𝑦 ((𝜑𝐶 ∈ On) → (𝐶𝑎 → (𝐺𝐶) ⊆ (𝐺𝑎))) → ((𝜑𝐶 ∈ On) → (𝐶𝑦 → (𝐺𝐶) ⊆ (𝐺𝑦)))))
725, 10, 71tfis3 6949 . . 3 (𝐷 ∈ On → ((𝜑𝐶 ∈ On) → (𝐶𝐷 → (𝐺𝐶) ⊆ (𝐺𝐷))))
7372expdcom 454 . 2 (𝜑 → (𝐶 ∈ On → (𝐷 ∈ On → (𝐶𝐷 → (𝐺𝐶) ⊆ (𝐺𝐷)))))
74733imp2 1274 1 ((𝜑 ∧ (𝐶 ∈ On ∧ 𝐷 ∈ On ∧ 𝐶𝐷)) → (𝐺𝐶) ⊆ (𝐺𝐷))
 Colors of variables: wff setvar class Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 195   ∨ wo 382   ∧ wa 383   ∧ w3a 1031  ∀wal 1473   = wceq 1475   ∈ wcel 1977  ∀wral 2896  Vcvv 3173   ∖ cdif 3537   ∪ cun 3538   ∩ cin 3539   ⊆ wss 3540  ∅c0 3874  ifcif 4036  𝒫 cpw 4108  {csn 4125  ∪ cuni 4372   ↦ cmpt 4643  dom cdm 5038  ran crn 5039   “ cima 5041  Ord word 5639  Oncon0 5640  suc csuc 5642   Fn wfn 5799  –1-1-onto→wf1o 5803  ‘cfv 5804  recscrecs 7354  Fincfn 7841  cardccrd 8644 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847 This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-ral 2901  df-rex 2902  df-reu 2903  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-wrecs 7294  df-recs 7355 This theorem is referenced by:  ttukeylem6  9219  ttukeylem7  9220
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