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Theorem oeordsuc 8631
Description: Ordering property of ordinal exponentiation with a successor exponent. Corollary 8.36 of [TakeutiZaring] p. 68. (Contributed by NM, 7-Jan-2005.)
Assertion
Ref Expression
oeordsuc ((𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵 → (𝐴o suc 𝐶) ∈ (𝐵o suc 𝐶)))

Proof of Theorem oeordsuc
StepHypRef Expression
1 onelon 6411 . . . 4 ((𝐵 ∈ On ∧ 𝐴𝐵) → 𝐴 ∈ On)
21ex 412 . . 3 (𝐵 ∈ On → (𝐴𝐵𝐴 ∈ On))
32adantr 480 . 2 ((𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵𝐴 ∈ On))
4 oewordri 8629 . . . . . . . . . . 11 ((𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵 → (𝐴o 𝐶) ⊆ (𝐵o 𝐶)))
543adant1 1129 . . . . . . . . . 10 ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵 → (𝐴o 𝐶) ⊆ (𝐵o 𝐶)))
6 oecl 8574 . . . . . . . . . . . 12 ((𝐴 ∈ On ∧ 𝐶 ∈ On) → (𝐴o 𝐶) ∈ On)
763adant2 1130 . . . . . . . . . . 11 ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴o 𝐶) ∈ On)
8 oecl 8574 . . . . . . . . . . . 12 ((𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐵o 𝐶) ∈ On)
983adant1 1129 . . . . . . . . . . 11 ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐵o 𝐶) ∈ On)
10 simp1 1135 . . . . . . . . . . 11 ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → 𝐴 ∈ On)
11 omwordri 8609 . . . . . . . . . . 11 (((𝐴o 𝐶) ∈ On ∧ (𝐵o 𝐶) ∈ On ∧ 𝐴 ∈ On) → ((𝐴o 𝐶) ⊆ (𝐵o 𝐶) → ((𝐴o 𝐶) ·o 𝐴) ⊆ ((𝐵o 𝐶) ·o 𝐴)))
127, 9, 10, 11syl3anc 1370 . . . . . . . . . 10 ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → ((𝐴o 𝐶) ⊆ (𝐵o 𝐶) → ((𝐴o 𝐶) ·o 𝐴) ⊆ ((𝐵o 𝐶) ·o 𝐴)))
135, 12syld 47 . . . . . . . . 9 ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵 → ((𝐴o 𝐶) ·o 𝐴) ⊆ ((𝐵o 𝐶) ·o 𝐴)))
14 oesuc 8564 . . . . . . . . . . 11 ((𝐴 ∈ On ∧ 𝐶 ∈ On) → (𝐴o suc 𝐶) = ((𝐴o 𝐶) ·o 𝐴))
15143adant2 1130 . . . . . . . . . 10 ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴o suc 𝐶) = ((𝐴o 𝐶) ·o 𝐴))
1615sseq1d 4027 . . . . . . . . 9 ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → ((𝐴o suc 𝐶) ⊆ ((𝐵o 𝐶) ·o 𝐴) ↔ ((𝐴o 𝐶) ·o 𝐴) ⊆ ((𝐵o 𝐶) ·o 𝐴)))
1713, 16sylibrd 259 . . . . . . . 8 ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵 → (𝐴o suc 𝐶) ⊆ ((𝐵o 𝐶) ·o 𝐴)))
18 ne0i 4347 . . . . . . . . . . . . . 14 (𝐴𝐵𝐵 ≠ ∅)
19 on0eln0 6442 . . . . . . . . . . . . . 14 (𝐵 ∈ On → (∅ ∈ 𝐵𝐵 ≠ ∅))
2018, 19imbitrrid 246 . . . . . . . . . . . . 13 (𝐵 ∈ On → (𝐴𝐵 → ∅ ∈ 𝐵))
2120adantr 480 . . . . . . . . . . . 12 ((𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵 → ∅ ∈ 𝐵))
22 oen0 8623 . . . . . . . . . . . . 13 (((𝐵 ∈ On ∧ 𝐶 ∈ On) ∧ ∅ ∈ 𝐵) → ∅ ∈ (𝐵o 𝐶))
2322ex 412 . . . . . . . . . . . 12 ((𝐵 ∈ On ∧ 𝐶 ∈ On) → (∅ ∈ 𝐵 → ∅ ∈ (𝐵o 𝐶)))
2421, 23syld 47 . . . . . . . . . . 11 ((𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵 → ∅ ∈ (𝐵o 𝐶)))
25 omordi 8603 . . . . . . . . . . . . . 14 (((𝐵 ∈ On ∧ (𝐵o 𝐶) ∈ On) ∧ ∅ ∈ (𝐵o 𝐶)) → (𝐴𝐵 → ((𝐵o 𝐶) ·o 𝐴) ∈ ((𝐵o 𝐶) ·o 𝐵)))
268, 25syldanl 602 . . . . . . . . . . . . 13 (((𝐵 ∈ On ∧ 𝐶 ∈ On) ∧ ∅ ∈ (𝐵o 𝐶)) → (𝐴𝐵 → ((𝐵o 𝐶) ·o 𝐴) ∈ ((𝐵o 𝐶) ·o 𝐵)))
2726ex 412 . . . . . . . . . . . 12 ((𝐵 ∈ On ∧ 𝐶 ∈ On) → (∅ ∈ (𝐵o 𝐶) → (𝐴𝐵 → ((𝐵o 𝐶) ·o 𝐴) ∈ ((𝐵o 𝐶) ·o 𝐵))))
2827com23 86 . . . . . . . . . . 11 ((𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵 → (∅ ∈ (𝐵o 𝐶) → ((𝐵o 𝐶) ·o 𝐴) ∈ ((𝐵o 𝐶) ·o 𝐵))))
2924, 28mpdd 43 . . . . . . . . . 10 ((𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵 → ((𝐵o 𝐶) ·o 𝐴) ∈ ((𝐵o 𝐶) ·o 𝐵)))
30293adant1 1129 . . . . . . . . 9 ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵 → ((𝐵o 𝐶) ·o 𝐴) ∈ ((𝐵o 𝐶) ·o 𝐵)))
31 oesuc 8564 . . . . . . . . . . 11 ((𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐵o suc 𝐶) = ((𝐵o 𝐶) ·o 𝐵))
32313adant1 1129 . . . . . . . . . 10 ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐵o suc 𝐶) = ((𝐵o 𝐶) ·o 𝐵))
3332eleq2d 2825 . . . . . . . . 9 ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (((𝐵o 𝐶) ·o 𝐴) ∈ (𝐵o suc 𝐶) ↔ ((𝐵o 𝐶) ·o 𝐴) ∈ ((𝐵o 𝐶) ·o 𝐵)))
3430, 33sylibrd 259 . . . . . . . 8 ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵 → ((𝐵o 𝐶) ·o 𝐴) ∈ (𝐵o suc 𝐶)))
3517, 34jcad 512 . . . . . . 7 ((𝐴 ∈ On ∧ 𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵 → ((𝐴o suc 𝐶) ⊆ ((𝐵o 𝐶) ·o 𝐴) ∧ ((𝐵o 𝐶) ·o 𝐴) ∈ (𝐵o suc 𝐶))))
36353expa 1117 . . . . . 6 (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ 𝐶 ∈ On) → (𝐴𝐵 → ((𝐴o suc 𝐶) ⊆ ((𝐵o 𝐶) ·o 𝐴) ∧ ((𝐵o 𝐶) ·o 𝐴) ∈ (𝐵o suc 𝐶))))
37 onsucb 7837 . . . . . . 7 (𝐶 ∈ On ↔ suc 𝐶 ∈ On)
38 oecl 8574 . . . . . . . . 9 ((𝐴 ∈ On ∧ suc 𝐶 ∈ On) → (𝐴o suc 𝐶) ∈ On)
39 oecl 8574 . . . . . . . . 9 ((𝐵 ∈ On ∧ suc 𝐶 ∈ On) → (𝐵o suc 𝐶) ∈ On)
40 ontr2 6433 . . . . . . . . 9 (((𝐴o suc 𝐶) ∈ On ∧ (𝐵o suc 𝐶) ∈ On) → (((𝐴o suc 𝐶) ⊆ ((𝐵o 𝐶) ·o 𝐴) ∧ ((𝐵o 𝐶) ·o 𝐴) ∈ (𝐵o suc 𝐶)) → (𝐴o suc 𝐶) ∈ (𝐵o suc 𝐶)))
4138, 39, 40syl2an 596 . . . . . . . 8 (((𝐴 ∈ On ∧ suc 𝐶 ∈ On) ∧ (𝐵 ∈ On ∧ suc 𝐶 ∈ On)) → (((𝐴o suc 𝐶) ⊆ ((𝐵o 𝐶) ·o 𝐴) ∧ ((𝐵o 𝐶) ·o 𝐴) ∈ (𝐵o suc 𝐶)) → (𝐴o suc 𝐶) ∈ (𝐵o suc 𝐶)))
4241anandirs 679 . . . . . . 7 (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ suc 𝐶 ∈ On) → (((𝐴o suc 𝐶) ⊆ ((𝐵o 𝐶) ·o 𝐴) ∧ ((𝐵o 𝐶) ·o 𝐴) ∈ (𝐵o suc 𝐶)) → (𝐴o suc 𝐶) ∈ (𝐵o suc 𝐶)))
4337, 42sylan2b 594 . . . . . 6 (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ 𝐶 ∈ On) → (((𝐴o suc 𝐶) ⊆ ((𝐵o 𝐶) ·o 𝐴) ∧ ((𝐵o 𝐶) ·o 𝐴) ∈ (𝐵o suc 𝐶)) → (𝐴o suc 𝐶) ∈ (𝐵o suc 𝐶)))
4436, 43syld 47 . . . . 5 (((𝐴 ∈ On ∧ 𝐵 ∈ On) ∧ 𝐶 ∈ On) → (𝐴𝐵 → (𝐴o suc 𝐶) ∈ (𝐵o suc 𝐶)))
4544exp31 419 . . . 4 (𝐴 ∈ On → (𝐵 ∈ On → (𝐶 ∈ On → (𝐴𝐵 → (𝐴o suc 𝐶) ∈ (𝐵o suc 𝐶)))))
4645com4l 92 . . 3 (𝐵 ∈ On → (𝐶 ∈ On → (𝐴𝐵 → (𝐴 ∈ On → (𝐴o suc 𝐶) ∈ (𝐵o suc 𝐶)))))
4746imp 406 . 2 ((𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵 → (𝐴 ∈ On → (𝐴o suc 𝐶) ∈ (𝐵o suc 𝐶))))
483, 47mpdd 43 1 ((𝐵 ∈ On ∧ 𝐶 ∈ On) → (𝐴𝐵 → (𝐴o suc 𝐶) ∈ (𝐵o suc 𝐶)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395  w3a 1086   = wceq 1537  wcel 2106  wne 2938  wss 3963  c0 4339  Oncon0 6386  suc csuc 6388  (class class class)co 7431   ·o comu 8503  o coe 8504
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1908  ax-6 1965  ax-7 2005  ax-8 2108  ax-9 2116  ax-10 2139  ax-11 2155  ax-12 2175  ax-ext 2706  ax-rep 5285  ax-sep 5302  ax-nul 5312  ax-pr 5438  ax-un 7754
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1540  df-fal 1550  df-ex 1777  df-nf 1781  df-sb 2063  df-mo 2538  df-eu 2567  df-clab 2713  df-cleq 2727  df-clel 2814  df-nfc 2890  df-ne 2939  df-ral 3060  df-rex 3069  df-reu 3379  df-rab 3434  df-v 3480  df-sbc 3792  df-csb 3909  df-dif 3966  df-un 3968  df-in 3970  df-ss 3980  df-pss 3983  df-nul 4340  df-if 4532  df-pw 4607  df-sn 4632  df-pr 4634  df-op 4638  df-uni 4913  df-iun 4998  df-br 5149  df-opab 5211  df-mpt 5232  df-tr 5266  df-id 5583  df-eprel 5589  df-po 5597  df-so 5598  df-fr 5641  df-we 5643  df-xp 5695  df-rel 5696  df-cnv 5697  df-co 5698  df-dm 5699  df-rn 5700  df-res 5701  df-ima 5702  df-pred 6323  df-ord 6389  df-on 6390  df-lim 6391  df-suc 6392  df-iota 6516  df-fun 6565  df-fn 6566  df-f 6567  df-f1 6568  df-fo 6569  df-f1o 6570  df-fv 6571  df-ov 7434  df-oprab 7435  df-mpo 7436  df-om 7888  df-2nd 8014  df-frecs 8305  df-wrecs 8336  df-recs 8410  df-rdg 8449  df-1o 8505  df-oadd 8509  df-omul 8510  df-oexp 8511
This theorem is referenced by: (None)
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