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Mirrors > Home > MPE Home > Th. List > oaabslem | Structured version Visualization version GIF version |
Description: Lemma for oaabs 8274. (Contributed by NM, 9-Dec-2004.) |
Ref | Expression |
---|---|
oaabslem | ⊢ ((ω ∈ On ∧ 𝐴 ∈ ω) → (𝐴 +o ω) = ω) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnon 7589 | . . . . 5 ⊢ (𝐴 ∈ ω → 𝐴 ∈ On) | |
2 | limom 7598 | . . . . . 6 ⊢ Lim ω | |
3 | 2 | jctr 527 | . . . . 5 ⊢ (ω ∈ On → (ω ∈ On ∧ Lim ω)) |
4 | oalim 8160 | . . . . 5 ⊢ ((𝐴 ∈ On ∧ (ω ∈ On ∧ Lim ω)) → (𝐴 +o ω) = ∪ 𝑥 ∈ ω (𝐴 +o 𝑥)) | |
5 | 1, 3, 4 | syl2an 597 | . . . 4 ⊢ ((𝐴 ∈ ω ∧ ω ∈ On) → (𝐴 +o ω) = ∪ 𝑥 ∈ ω (𝐴 +o 𝑥)) |
6 | ordom 7592 | . . . . . . . 8 ⊢ Ord ω | |
7 | nnacl 8240 | . . . . . . . 8 ⊢ ((𝐴 ∈ ω ∧ 𝑥 ∈ ω) → (𝐴 +o 𝑥) ∈ ω) | |
8 | ordelss 6210 | . . . . . . . 8 ⊢ ((Ord ω ∧ (𝐴 +o 𝑥) ∈ ω) → (𝐴 +o 𝑥) ⊆ ω) | |
9 | 6, 7, 8 | sylancr 589 | . . . . . . 7 ⊢ ((𝐴 ∈ ω ∧ 𝑥 ∈ ω) → (𝐴 +o 𝑥) ⊆ ω) |
10 | 9 | ralrimiva 3185 | . . . . . 6 ⊢ (𝐴 ∈ ω → ∀𝑥 ∈ ω (𝐴 +o 𝑥) ⊆ ω) |
11 | iunss 4972 | . . . . . 6 ⊢ (∪ 𝑥 ∈ ω (𝐴 +o 𝑥) ⊆ ω ↔ ∀𝑥 ∈ ω (𝐴 +o 𝑥) ⊆ ω) | |
12 | 10, 11 | sylibr 236 | . . . . 5 ⊢ (𝐴 ∈ ω → ∪ 𝑥 ∈ ω (𝐴 +o 𝑥) ⊆ ω) |
13 | 12 | adantr 483 | . . . 4 ⊢ ((𝐴 ∈ ω ∧ ω ∈ On) → ∪ 𝑥 ∈ ω (𝐴 +o 𝑥) ⊆ ω) |
14 | 5, 13 | eqsstrd 4008 | . . 3 ⊢ ((𝐴 ∈ ω ∧ ω ∈ On) → (𝐴 +o ω) ⊆ ω) |
15 | 14 | ancoms 461 | . 2 ⊢ ((ω ∈ On ∧ 𝐴 ∈ ω) → (𝐴 +o ω) ⊆ ω) |
16 | oaword2 8182 | . . 3 ⊢ ((ω ∈ On ∧ 𝐴 ∈ On) → ω ⊆ (𝐴 +o ω)) | |
17 | 1, 16 | sylan2 594 | . 2 ⊢ ((ω ∈ On ∧ 𝐴 ∈ ω) → ω ⊆ (𝐴 +o ω)) |
18 | 15, 17 | eqssd 3987 | 1 ⊢ ((ω ∈ On ∧ 𝐴 ∈ ω) → (𝐴 +o ω) = ω) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 = wceq 1536 ∈ wcel 2113 ∀wral 3141 ⊆ wss 3939 ∪ ciun 4922 Ord word 6193 Oncon0 6194 Lim wlim 6195 (class class class)co 7159 ωcom 7583 +o coa 8102 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2796 ax-rep 5193 ax-sep 5206 ax-nul 5213 ax-pow 5269 ax-pr 5333 ax-un 7464 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-mo 2621 df-eu 2653 df-clab 2803 df-cleq 2817 df-clel 2896 df-nfc 2966 df-ne 3020 df-ral 3146 df-rex 3147 df-reu 3148 df-rab 3150 df-v 3499 df-sbc 3776 df-csb 3887 df-dif 3942 df-un 3944 df-in 3946 df-ss 3955 df-pss 3957 df-nul 4295 df-if 4471 df-pw 4544 df-sn 4571 df-pr 4573 df-tp 4575 df-op 4577 df-uni 4842 df-iun 4924 df-br 5070 df-opab 5132 df-mpt 5150 df-tr 5176 df-id 5463 df-eprel 5468 df-po 5477 df-so 5478 df-fr 5517 df-we 5519 df-xp 5564 df-rel 5565 df-cnv 5566 df-co 5567 df-dm 5568 df-rn 5569 df-res 5570 df-ima 5571 df-pred 6151 df-ord 6197 df-on 6198 df-lim 6199 df-suc 6200 df-iota 6317 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-ov 7162 df-oprab 7163 df-mpo 7164 df-om 7584 df-wrecs 7950 df-recs 8011 df-rdg 8049 df-oadd 8109 |
This theorem is referenced by: oaabs 8274 oaabs2 8275 oancom 9117 |
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