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Theorem oeoelem 7945
Description: Lemma for oeoe 7946. (Contributed by Eric Schmidt, 26-May-2009.)
Hypotheses
Ref Expression
oeoelem.1 𝐴 ∈ On
oeoelem.2 ∅ ∈ 𝐴
Assertion
Ref Expression
oeoelem ((𝐵 ∈ On ∧ 𝐶 ∈ On) → ((𝐴o 𝐵) ↑o 𝐶) = (𝐴o (𝐵 ·o 𝐶)))

Proof of Theorem oeoelem
Dummy variables 𝑥 𝑦 𝑧 𝑤 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 oveq2 6913 . . . 4 (𝑥 = ∅ → ((𝐴o 𝐵) ↑o 𝑥) = ((𝐴o 𝐵) ↑o ∅))
2 oveq2 6913 . . . . 5 (𝑥 = ∅ → (𝐵 ·o 𝑥) = (𝐵 ·o ∅))
32oveq2d 6921 . . . 4 (𝑥 = ∅ → (𝐴o (𝐵 ·o 𝑥)) = (𝐴o (𝐵 ·o ∅)))
41, 3eqeq12d 2840 . . 3 (𝑥 = ∅ → (((𝐴o 𝐵) ↑o 𝑥) = (𝐴o (𝐵 ·o 𝑥)) ↔ ((𝐴o 𝐵) ↑o ∅) = (𝐴o (𝐵 ·o ∅))))
5 oveq2 6913 . . . 4 (𝑥 = 𝑦 → ((𝐴o 𝐵) ↑o 𝑥) = ((𝐴o 𝐵) ↑o 𝑦))
6 oveq2 6913 . . . . 5 (𝑥 = 𝑦 → (𝐵 ·o 𝑥) = (𝐵 ·o 𝑦))
76oveq2d 6921 . . . 4 (𝑥 = 𝑦 → (𝐴o (𝐵 ·o 𝑥)) = (𝐴o (𝐵 ·o 𝑦)))
85, 7eqeq12d 2840 . . 3 (𝑥 = 𝑦 → (((𝐴o 𝐵) ↑o 𝑥) = (𝐴o (𝐵 ·o 𝑥)) ↔ ((𝐴o 𝐵) ↑o 𝑦) = (𝐴o (𝐵 ·o 𝑦))))
9 oveq2 6913 . . . 4 (𝑥 = suc 𝑦 → ((𝐴o 𝐵) ↑o 𝑥) = ((𝐴o 𝐵) ↑o suc 𝑦))
10 oveq2 6913 . . . . 5 (𝑥 = suc 𝑦 → (𝐵 ·o 𝑥) = (𝐵 ·o suc 𝑦))
1110oveq2d 6921 . . . 4 (𝑥 = suc 𝑦 → (𝐴o (𝐵 ·o 𝑥)) = (𝐴o (𝐵 ·o suc 𝑦)))
129, 11eqeq12d 2840 . . 3 (𝑥 = suc 𝑦 → (((𝐴o 𝐵) ↑o 𝑥) = (𝐴o (𝐵 ·o 𝑥)) ↔ ((𝐴o 𝐵) ↑o suc 𝑦) = (𝐴o (𝐵 ·o suc 𝑦))))
13 oveq2 6913 . . . 4 (𝑥 = 𝐶 → ((𝐴o 𝐵) ↑o 𝑥) = ((𝐴o 𝐵) ↑o 𝐶))
14 oveq2 6913 . . . . 5 (𝑥 = 𝐶 → (𝐵 ·o 𝑥) = (𝐵 ·o 𝐶))
1514oveq2d 6921 . . . 4 (𝑥 = 𝐶 → (𝐴o (𝐵 ·o 𝑥)) = (𝐴o (𝐵 ·o 𝐶)))
1613, 15eqeq12d 2840 . . 3 (𝑥 = 𝐶 → (((𝐴o 𝐵) ↑o 𝑥) = (𝐴o (𝐵 ·o 𝑥)) ↔ ((𝐴o 𝐵) ↑o 𝐶) = (𝐴o (𝐵 ·o 𝐶))))
17 oeoelem.1 . . . . . 6 𝐴 ∈ On
18 oecl 7884 . . . . . 6 ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴o 𝐵) ∈ On)
1917, 18mpan 683 . . . . 5 (𝐵 ∈ On → (𝐴o 𝐵) ∈ On)
20 oe0 7869 . . . . 5 ((𝐴o 𝐵) ∈ On → ((𝐴o 𝐵) ↑o ∅) = 1o)
2119, 20syl 17 . . . 4 (𝐵 ∈ On → ((𝐴o 𝐵) ↑o ∅) = 1o)
22 om0 7864 . . . . . 6 (𝐵 ∈ On → (𝐵 ·o ∅) = ∅)
2322oveq2d 6921 . . . . 5 (𝐵 ∈ On → (𝐴o (𝐵 ·o ∅)) = (𝐴o ∅))
24 oe0 7869 . . . . . 6 (𝐴 ∈ On → (𝐴o ∅) = 1o)
2517, 24ax-mp 5 . . . . 5 (𝐴o ∅) = 1o
2623, 25syl6eq 2877 . . . 4 (𝐵 ∈ On → (𝐴o (𝐵 ·o ∅)) = 1o)
2721, 26eqtr4d 2864 . . 3 (𝐵 ∈ On → ((𝐴o 𝐵) ↑o ∅) = (𝐴o (𝐵 ·o ∅)))
28 oveq1 6912 . . . . 5 (((𝐴o 𝐵) ↑o 𝑦) = (𝐴o (𝐵 ·o 𝑦)) → (((𝐴o 𝐵) ↑o 𝑦) ·o (𝐴o 𝐵)) = ((𝐴o (𝐵 ·o 𝑦)) ·o (𝐴o 𝐵)))
29 oesuc 7874 . . . . . . 7 (((𝐴o 𝐵) ∈ On ∧ 𝑦 ∈ On) → ((𝐴o 𝐵) ↑o suc 𝑦) = (((𝐴o 𝐵) ↑o 𝑦) ·o (𝐴o 𝐵)))
3019, 29sylan 577 . . . . . 6 ((𝐵 ∈ On ∧ 𝑦 ∈ On) → ((𝐴o 𝐵) ↑o suc 𝑦) = (((𝐴o 𝐵) ↑o 𝑦) ·o (𝐴o 𝐵)))
31 omsuc 7873 . . . . . . . 8 ((𝐵 ∈ On ∧ 𝑦 ∈ On) → (𝐵 ·o suc 𝑦) = ((𝐵 ·o 𝑦) +o 𝐵))
3231oveq2d 6921 . . . . . . 7 ((𝐵 ∈ On ∧ 𝑦 ∈ On) → (𝐴o (𝐵 ·o suc 𝑦)) = (𝐴o ((𝐵 ·o 𝑦) +o 𝐵)))
33 omcl 7883 . . . . . . . . 9 ((𝐵 ∈ On ∧ 𝑦 ∈ On) → (𝐵 ·o 𝑦) ∈ On)
34 oeoa 7944 . . . . . . . . . 10 ((𝐴 ∈ On ∧ (𝐵 ·o 𝑦) ∈ On ∧ 𝐵 ∈ On) → (𝐴o ((𝐵 ·o 𝑦) +o 𝐵)) = ((𝐴o (𝐵 ·o 𝑦)) ·o (𝐴o 𝐵)))
3517, 34mp3an1 1578 . . . . . . . . 9 (((𝐵 ·o 𝑦) ∈ On ∧ 𝐵 ∈ On) → (𝐴o ((𝐵 ·o 𝑦) +o 𝐵)) = ((𝐴o (𝐵 ·o 𝑦)) ·o (𝐴o 𝐵)))
3633, 35sylan 577 . . . . . . . 8 (((𝐵 ∈ On ∧ 𝑦 ∈ On) ∧ 𝐵 ∈ On) → (𝐴o ((𝐵 ·o 𝑦) +o 𝐵)) = ((𝐴o (𝐵 ·o 𝑦)) ·o (𝐴o 𝐵)))
3736anabss1 658 . . . . . . 7 ((𝐵 ∈ On ∧ 𝑦 ∈ On) → (𝐴o ((𝐵 ·o 𝑦) +o 𝐵)) = ((𝐴o (𝐵 ·o 𝑦)) ·o (𝐴o 𝐵)))
3832, 37eqtrd 2861 . . . . . 6 ((𝐵 ∈ On ∧ 𝑦 ∈ On) → (𝐴o (𝐵 ·o suc 𝑦)) = ((𝐴o (𝐵 ·o 𝑦)) ·o (𝐴o 𝐵)))
3930, 38eqeq12d 2840 . . . . 5 ((𝐵 ∈ On ∧ 𝑦 ∈ On) → (((𝐴o 𝐵) ↑o suc 𝑦) = (𝐴o (𝐵 ·o suc 𝑦)) ↔ (((𝐴o 𝐵) ↑o 𝑦) ·o (𝐴o 𝐵)) = ((𝐴o (𝐵 ·o 𝑦)) ·o (𝐴o 𝐵))))
4028, 39syl5ibr 238 . . . 4 ((𝐵 ∈ On ∧ 𝑦 ∈ On) → (((𝐴o 𝐵) ↑o 𝑦) = (𝐴o (𝐵 ·o 𝑦)) → ((𝐴o 𝐵) ↑o suc 𝑦) = (𝐴o (𝐵 ·o suc 𝑦))))
4140expcom 404 . . 3 (𝑦 ∈ On → (𝐵 ∈ On → (((𝐴o 𝐵) ↑o 𝑦) = (𝐴o (𝐵 ·o 𝑦)) → ((𝐴o 𝐵) ↑o suc 𝑦) = (𝐴o (𝐵 ·o suc 𝑦)))))
42 iuneq2 4757 . . . . 5 (∀𝑦𝑥 ((𝐴o 𝐵) ↑o 𝑦) = (𝐴o (𝐵 ·o 𝑦)) → 𝑦𝑥 ((𝐴o 𝐵) ↑o 𝑦) = 𝑦𝑥 (𝐴o (𝐵 ·o 𝑦)))
43 vex 3417 . . . . . . 7 𝑥 ∈ V
44 oeoelem.2 . . . . . . . . . . 11 ∅ ∈ 𝐴
45 oen0 7933 . . . . . . . . . . 11 (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ ∅ ∈ 𝐴) → ∅ ∈ (𝐴o 𝐵))
4644, 45mpan2 684 . . . . . . . . . 10 ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ∅ ∈ (𝐴o 𝐵))
47 oelim 7881 . . . . . . . . . . 11 ((((𝐴o 𝐵) ∈ On ∧ (𝑥 ∈ V ∧ Lim 𝑥)) ∧ ∅ ∈ (𝐴o 𝐵)) → ((𝐴o 𝐵) ↑o 𝑥) = 𝑦𝑥 ((𝐴o 𝐵) ↑o 𝑦))
4818, 47sylanl1 672 . . . . . . . . . 10 ((((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝑥 ∈ V ∧ Lim 𝑥)) ∧ ∅ ∈ (𝐴o 𝐵)) → ((𝐴o 𝐵) ↑o 𝑥) = 𝑦𝑥 ((𝐴o 𝐵) ↑o 𝑦))
4946, 48sylan2 588 . . . . . . . . 9 ((((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝑥 ∈ V ∧ Lim 𝑥)) ∧ (𝐴 ∈ On ∧ 𝐵 ∈ On)) → ((𝐴o 𝐵) ↑o 𝑥) = 𝑦𝑥 ((𝐴o 𝐵) ↑o 𝑦))
5049anabss1 658 . . . . . . . 8 (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ (𝑥 ∈ V ∧ Lim 𝑥)) → ((𝐴o 𝐵) ↑o 𝑥) = 𝑦𝑥 ((𝐴o 𝐵) ↑o 𝑦))
5117, 50mpanl1 693 . . . . . . 7 ((𝐵 ∈ On ∧ (𝑥 ∈ V ∧ Lim 𝑥)) → ((𝐴o 𝐵) ↑o 𝑥) = 𝑦𝑥 ((𝐴o 𝐵) ↑o 𝑦))
5243, 51mpanr1 696 . . . . . 6 ((𝐵 ∈ On ∧ Lim 𝑥) → ((𝐴o 𝐵) ↑o 𝑥) = 𝑦𝑥 ((𝐴o 𝐵) ↑o 𝑦))
53 omlim 7880 . . . . . . . . 9 ((𝐵 ∈ On ∧ (𝑥 ∈ V ∧ Lim 𝑥)) → (𝐵 ·o 𝑥) = 𝑦𝑥 (𝐵 ·o 𝑦))
5443, 53mpanr1 696 . . . . . . . 8 ((𝐵 ∈ On ∧ Lim 𝑥) → (𝐵 ·o 𝑥) = 𝑦𝑥 (𝐵 ·o 𝑦))
5554oveq2d 6921 . . . . . . 7 ((𝐵 ∈ On ∧ Lim 𝑥) → (𝐴o (𝐵 ·o 𝑥)) = (𝐴o 𝑦𝑥 (𝐵 ·o 𝑦)))
5643a1i 11 . . . . . . . 8 ((𝐵 ∈ On ∧ Lim 𝑥) → 𝑥 ∈ V)
57 limord 6022 . . . . . . . . . . . 12 (Lim 𝑥 → Ord 𝑥)
58 ordelon 5987 . . . . . . . . . . . 12 ((Ord 𝑥𝑦𝑥) → 𝑦 ∈ On)
5957, 58sylan 577 . . . . . . . . . . 11 ((Lim 𝑥𝑦𝑥) → 𝑦 ∈ On)
6059, 33sylan2 588 . . . . . . . . . 10 ((𝐵 ∈ On ∧ (Lim 𝑥𝑦𝑥)) → (𝐵 ·o 𝑦) ∈ On)
6160anassrs 461 . . . . . . . . 9 (((𝐵 ∈ On ∧ Lim 𝑥) ∧ 𝑦𝑥) → (𝐵 ·o 𝑦) ∈ On)
6261ralrimiva 3175 . . . . . . . 8 ((𝐵 ∈ On ∧ Lim 𝑥) → ∀𝑦𝑥 (𝐵 ·o 𝑦) ∈ On)
63 0ellim 6025 . . . . . . . . . 10 (Lim 𝑥 → ∅ ∈ 𝑥)
6463ne0d 4151 . . . . . . . . 9 (Lim 𝑥𝑥 ≠ ∅)
6564adantl 475 . . . . . . . 8 ((𝐵 ∈ On ∧ Lim 𝑥) → 𝑥 ≠ ∅)
66 vex 3417 . . . . . . . . . 10 𝑤 ∈ V
67 oelim 7881 . . . . . . . . . . . 12 (((𝐴 ∈ On ∧ (𝑤 ∈ V ∧ Lim 𝑤)) ∧ ∅ ∈ 𝐴) → (𝐴o 𝑤) = 𝑧𝑤 (𝐴o 𝑧))
6844, 67mpan2 684 . . . . . . . . . . 11 ((𝐴 ∈ On ∧ (𝑤 ∈ V ∧ Lim 𝑤)) → (𝐴o 𝑤) = 𝑧𝑤 (𝐴o 𝑧))
6917, 68mpan 683 . . . . . . . . . 10 ((𝑤 ∈ V ∧ Lim 𝑤) → (𝐴o 𝑤) = 𝑧𝑤 (𝐴o 𝑧))
7066, 69mpan 683 . . . . . . . . 9 (Lim 𝑤 → (𝐴o 𝑤) = 𝑧𝑤 (𝐴o 𝑧))
71 oewordi 7938 . . . . . . . . . . . 12 (((𝑧 ∈ On ∧ 𝑤 ∈ On ∧ 𝐴 ∈ On) ∧ ∅ ∈ 𝐴) → (𝑧𝑤 → (𝐴o 𝑧) ⊆ (𝐴o 𝑤)))
7244, 71mpan2 684 . . . . . . . . . . 11 ((𝑧 ∈ On ∧ 𝑤 ∈ On ∧ 𝐴 ∈ On) → (𝑧𝑤 → (𝐴o 𝑧) ⊆ (𝐴o 𝑤)))
7317, 72mp3an3 1580 . . . . . . . . . 10 ((𝑧 ∈ On ∧ 𝑤 ∈ On) → (𝑧𝑤 → (𝐴o 𝑧) ⊆ (𝐴o 𝑤)))
74733impia 1151 . . . . . . . . 9 ((𝑧 ∈ On ∧ 𝑤 ∈ On ∧ 𝑧𝑤) → (𝐴o 𝑧) ⊆ (𝐴o 𝑤))
7570, 74onoviun 7706 . . . . . . . 8 ((𝑥 ∈ V ∧ ∀𝑦𝑥 (𝐵 ·o 𝑦) ∈ On ∧ 𝑥 ≠ ∅) → (𝐴o 𝑦𝑥 (𝐵 ·o 𝑦)) = 𝑦𝑥 (𝐴o (𝐵 ·o 𝑦)))
7656, 62, 65, 75syl3anc 1496 . . . . . . 7 ((𝐵 ∈ On ∧ Lim 𝑥) → (𝐴o 𝑦𝑥 (𝐵 ·o 𝑦)) = 𝑦𝑥 (𝐴o (𝐵 ·o 𝑦)))
7755, 76eqtrd 2861 . . . . . 6 ((𝐵 ∈ On ∧ Lim 𝑥) → (𝐴o (𝐵 ·o 𝑥)) = 𝑦𝑥 (𝐴o (𝐵 ·o 𝑦)))
7852, 77eqeq12d 2840 . . . . 5 ((𝐵 ∈ On ∧ Lim 𝑥) → (((𝐴o 𝐵) ↑o 𝑥) = (𝐴o (𝐵 ·o 𝑥)) ↔ 𝑦𝑥 ((𝐴o 𝐵) ↑o 𝑦) = 𝑦𝑥 (𝐴o (𝐵 ·o 𝑦))))
7942, 78syl5ibr 238 . . . 4 ((𝐵 ∈ On ∧ Lim 𝑥) → (∀𝑦𝑥 ((𝐴o 𝐵) ↑o 𝑦) = (𝐴o (𝐵 ·o 𝑦)) → ((𝐴o 𝐵) ↑o 𝑥) = (𝐴o (𝐵 ·o 𝑥))))
8079expcom 404 . . 3 (Lim 𝑥 → (𝐵 ∈ On → (∀𝑦𝑥 ((𝐴o 𝐵) ↑o 𝑦) = (𝐴o (𝐵 ·o 𝑦)) → ((𝐴o 𝐵) ↑o 𝑥) = (𝐴o (𝐵 ·o 𝑥)))))
814, 8, 12, 16, 27, 41, 80tfinds3 7325 . 2 (𝐶 ∈ On → (𝐵 ∈ On → ((𝐴o 𝐵) ↑o 𝐶) = (𝐴o (𝐵 ·o 𝐶))))
8281impcom 398 1 ((𝐵 ∈ On ∧ 𝐶 ∈ On) → ((𝐴o 𝐵) ↑o 𝐶) = (𝐴o (𝐵 ·o 𝐶)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 386  w3a 1113   = wceq 1658  wcel 2166  wne 2999  wral 3117  Vcvv 3414  wss 3798  c0 4144   ciun 4740  Ord word 5962  Oncon0 5963  Lim wlim 5964  suc csuc 5965  (class class class)co 6905  1oc1o 7819   +o coa 7823   ·o comu 7824  o coe 7825
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1896  ax-4 1910  ax-5 2011  ax-6 2077  ax-7 2114  ax-8 2168  ax-9 2175  ax-10 2194  ax-11 2209  ax-12 2222  ax-13 2391  ax-ext 2803  ax-rep 4994  ax-sep 5005  ax-nul 5013  ax-pow 5065  ax-pr 5127  ax-un 7209
This theorem depends on definitions:  df-bi 199  df-an 387  df-or 881  df-3or 1114  df-3an 1115  df-tru 1662  df-ex 1881  df-nf 1885  df-sb 2070  df-mo 2605  df-eu 2640  df-clab 2812  df-cleq 2818  df-clel 2821  df-nfc 2958  df-ne 3000  df-ral 3122  df-rex 3123  df-reu 3124  df-rmo 3125  df-rab 3126  df-v 3416  df-sbc 3663  df-csb 3758  df-dif 3801  df-un 3803  df-in 3805  df-ss 3812  df-pss 3814  df-nul 4145  df-if 4307  df-pw 4380  df-sn 4398  df-pr 4400  df-tp 4402  df-op 4404  df-uni 4659  df-int 4698  df-iun 4742  df-br 4874  df-opab 4936  df-mpt 4953  df-tr 4976  df-id 5250  df-eprel 5255  df-po 5263  df-so 5264  df-fr 5301  df-we 5303  df-xp 5348  df-rel 5349  df-cnv 5350  df-co 5351  df-dm 5352  df-rn 5353  df-res 5354  df-ima 5355  df-pred 5920  df-ord 5966  df-on 5967  df-lim 5968  df-suc 5969  df-iota 6086  df-fun 6125  df-fn 6126  df-f 6127  df-f1 6128  df-fo 6129  df-f1o 6130  df-fv 6131  df-ov 6908  df-oprab 6909  df-mpt2 6910  df-om 7327  df-wrecs 7672  df-recs 7734  df-rdg 7772  df-1o 7826  df-2o 7827  df-oadd 7830  df-omul 7831  df-oexp 7832
This theorem is referenced by:  oeoe  7946
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