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| Mirrors > Home > MPE Home > Th. List > Mathboxes > rp-oelim2 | Structured version Visualization version GIF version | ||
| Description: The power of an ordinal at least as large as two with a limit ordinal on thr right is a limit ordinal. Lemma 3.21 of [Schloeder] p. 10. See oelimcl 8585. (Contributed by RP, 30-Jan-2025.) |
| Ref | Expression |
|---|---|
| rp-oelim2 | ⊢ (((𝐴 ∈ On ∧ 1o ∈ 𝐴) ∧ (Lim 𝐵 ∧ 𝐵 ∈ 𝑉)) → Lim (𝐴 ↑o 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ondif2 8486 | . . 3 ⊢ (𝐴 ∈ (On ∖ 2o) ↔ (𝐴 ∈ On ∧ 1o ∈ 𝐴)) | |
| 2 | 1 | biimpri 231 | . 2 ⊢ ((𝐴 ∈ On ∧ 1o ∈ 𝐴) → 𝐴 ∈ (On ∖ 2o)) |
| 3 | pm3.22 464 | . 2 ⊢ ((Lim 𝐵 ∧ 𝐵 ∈ 𝑉) → (𝐵 ∈ 𝑉 ∧ Lim 𝐵)) | |
| 4 | oelimcl 8585 | . 2 ⊢ ((𝐴 ∈ (On ∖ 2o) ∧ (𝐵 ∈ 𝑉 ∧ Lim 𝐵)) → Lim (𝐴 ↑o 𝐵)) | |
| 5 | 2, 3, 4 | syl2an 607 | 1 ⊢ (((𝐴 ∈ On ∧ 1o ∈ 𝐴) ∧ (Lim 𝐵 ∧ 𝐵 ∈ 𝑉)) → Lim (𝐴 ↑o 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 ∈ wcel 2149 ∖ cdif 3910 Oncon0 6361 Lim wlim 6362 (class class class)co 7411 1oc1o 8445 2oc2o 8446 ↑o coe 8451 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-rep 5242 ax-sep 5261 ax-nul 5271 ax-pr 5405 ax-un 7733 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-tr 5223 df-id 5557 df-eprel 5562 df-po 5570 df-so 5571 df-fr 5615 df-we 5617 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7862 df-2nd 7986 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-rdg 8396 df-1o 8452 df-2o 8453 df-oadd 8456 df-omul 8457 df-oexp 8458 |
| This theorem is referenced by: (None) |
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