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Mirrors > Home > MPE Home > Th. List > oaabslem | Structured version Visualization version GIF version |
Description: Lemma for oaabs 8478. (Contributed by NM, 9-Dec-2004.) |
Ref | Expression |
---|---|
oaabslem | ⊢ ((ω ∈ On ∧ 𝐴 ∈ ω) → (𝐴 +o ω) = ω) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnon 7718 | . . . . 5 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) | |
2 | limom 7728 | . . . . . 6 ⊢ Lim ω | |
3 | 2 | jctr 525 | . . . . 5 ⊢ (ω ∈ On → (ω ∈ On ∧ Lim ω)) |
4 | oalim 8362 | . . . . 5 ⊢ ((𝐴 ∈ On ∧ (ω ∈ On ∧ Lim ω)) → (𝐴 +o ω) = ∪ 𝑥 ∈ ω (𝐴 +o 𝑥)) | |
5 | 1, 3, 4 | syl2an 596 | . . . 4 ⊢ ((𝐴 ∈ ω ∧ ω ∈ On) → (𝐴 +o ω) = ∪ 𝑥 ∈ ω (𝐴 +o 𝑥)) |
6 | ordom 7722 | . . . . . . . 8 ⊢ Ord ω | |
7 | nnacl 8442 | . . . . . . . 8 ⊢ ((𝐴 ∈ ω ∧ 𝑥 ∈ ω) → (𝐴 +o 𝑥) ∈ ω) | |
8 | ordelss 6282 | . . . . . . . 8 ⊢ ((Ord ω ∧ (𝐴 +o 𝑥) ∈ ω) → (𝐴 +o 𝑥) ⊆ ω) | |
9 | 6, 7, 8 | sylancr 587 | . . . . . . 7 ⊢ ((𝐴 ∈ ω ∧ 𝑥 ∈ ω) → (𝐴 +o 𝑥) ⊆ ω) |
10 | 9 | ralrimiva 3103 | . . . . . 6 ⊢ (𝐴 ∈ ω → ∀𝑥 ∈ ω (𝐴 +o 𝑥) ⊆ ω) |
11 | iunss 4975 | . . . . . 6 ⊢ (∪ 𝑥 ∈ ω (𝐴 +o 𝑥) ⊆ ω ↔ ∀𝑥 ∈ ω (𝐴 +o 𝑥) ⊆ ω) | |
12 | 10, 11 | sylibr 233 | . . . . 5 ⊢ (𝐴 ∈ ω → ∪ 𝑥 ∈ ω (𝐴 +o 𝑥) ⊆ ω) |
13 | 12 | adantr 481 | . . . 4 ⊢ ((𝐴 ∈ ω ∧ ω ∈ On) → ∪ 𝑥 ∈ ω (𝐴 +o 𝑥) ⊆ ω) |
14 | 5, 13 | eqsstrd 3959 | . . 3 ⊢ ((𝐴 ∈ ω ∧ ω ∈ On) → (𝐴 +o ω) ⊆ ω) |
15 | 14 | ancoms 459 | . 2 ⊢ ((ω ∈ On ∧ 𝐴 ∈ ω) → (𝐴 +o ω) ⊆ ω) |
16 | oaword2 8384 | . . 3 ⊢ ((ω ∈ On ∧ 𝐴 ∈ On) → ω ⊆ (𝐴 +o ω)) | |
17 | 1, 16 | sylan2 593 | . 2 ⊢ ((ω ∈ On ∧ 𝐴 ∈ ω) → ω ⊆ (𝐴 +o ω)) |
18 | 15, 17 | eqssd 3938 | 1 ⊢ ((ω ∈ On ∧ 𝐴 ∈ ω) → (𝐴 +o ω) = ω) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 = wceq 1539 ∈ wcel 2106 ∀wral 3064 ⊆ wss 3887 ∪ ciun 4924 Ord word 6265 Oncon0 6266 Lim wlim 6267 (class class class)co 7275 ωcom 7712 +o coa 8294 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pr 5352 ax-un 7588 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-oadd 8301 |
This theorem is referenced by: oaabs 8478 oaabs2 8479 oancom 9409 |
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