| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > limon | Structured version Visualization version GIF version | ||
| Description: The class of ordinal numbers is a limit ordinal. (Contributed by NM, 24-Mar-1995.) |
| Ref | Expression |
|---|---|
| limon | ⊢ Lim On |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ordon 7727 | . 2 ⊢ Ord On | |
| 2 | onn0 6383 | . 2 ⊢ On ≠ ∅ | |
| 3 | unon 7778 | . . 3 ⊢ ∪ On = On | |
| 4 | 3 | eqcomi 2749 | . 2 ⊢ On = ∪ On |
| 5 | df-lim 6322 | . 2 ⊢ (Lim On ↔ (Ord On ∧ On ≠ ∅ ∧ On = ∪ On)) | |
| 6 | 1, 2, 4, 5 | mpbir3an 1348 | 1 ⊢ Lim On |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1547 ≠ wne 2935 ∅c0 4268 ∪ cuni 4845 Ord word 6316 Oncon0 6317 Lim wlim 6318 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2712 ax-sep 5225 ax-nul 5235 ax-pr 5369 ax-un 7685 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 df-ne 2936 df-ral 3055 df-rex 3065 df-rab 3393 df-v 3434 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4269 df-if 4462 df-pw 4538 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4846 df-br 5080 df-opab 5142 df-tr 5187 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 |
| This theorem is referenced by: limom 7829 oesuc 8459 limensuc 9089 limsucncmp 36681 dflim5 43781 |
| Copyright terms: Public domain | W3C validator |