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Mirrors > Home > MPE Home > Th. List > ordom | Structured version Visualization version GIF version |
Description: The class of finite ordinals ω is ordinal. Theorem 7.32 of [TakeutiZaring] p. 43. (Contributed by NM, 18-Oct-1995.) (Proof shortened by Andrew Salmon, 27-Aug-2011.) |
Ref | Expression |
---|---|
ordom | ⊢ Ord ω |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | trom 7631 | . 2 ⊢ Tr ω | |
2 | omsson 7626 | . 2 ⊢ ω ⊆ On | |
3 | ordon 7539 | . 2 ⊢ Ord On | |
4 | trssord 6208 | . 2 ⊢ ((Tr ω ∧ ω ⊆ On ∧ Ord On) → Ord ω) | |
5 | 1, 2, 3, 4 | mp3an 1463 | 1 ⊢ Ord ω |
Colors of variables: wff setvar class |
Syntax hints: ⊆ wss 3853 Tr wtr 5146 Ord word 6190 Oncon0 6191 ωcom 7622 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-11 2160 ax-ext 2708 ax-sep 5177 ax-nul 5184 ax-pr 5307 ax-un 7501 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-sb 2073 df-clab 2715 df-cleq 2728 df-clel 2809 df-ne 2933 df-ral 3056 df-rex 3057 df-rab 3060 df-v 3400 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-pss 3872 df-nul 4224 df-if 4426 df-sn 4528 df-pr 4530 df-tp 4532 df-op 4534 df-uni 4806 df-br 5040 df-opab 5102 df-tr 5147 df-eprel 5445 df-po 5453 df-so 5454 df-fr 5494 df-we 5496 df-ord 6194 df-on 6195 df-lim 6196 df-om 7623 |
This theorem is referenced by: omon 7634 limom 7638 ssnlim 7642 omsindsOLD 7644 peano5 7649 peano5OLD 7650 omsucelsucb 8172 nnarcl 8322 nnawordex 8343 oaabslem 8350 oaabs2 8352 omabslem 8353 onomeneq 8845 ominf 8866 findcard3 8892 nnsdomg 8908 dffi3 9025 wofib 9139 alephgeom 9661 iscard3 9672 iunfictbso 9693 unctb 9784 ackbij2lem1 9798 ackbij1lem3 9801 ackbij1lem18 9816 ackbij2 9822 cflim2 9842 fin23lem26 9904 fin23lem23 9905 fin23lem27 9907 fin67 9974 alephexp1 10158 pwfseqlem3 10239 pwdjundom 10246 winainflem 10272 wunex2 10317 om2uzoi 13493 ltweuz 13499 fz1isolem 13992 1stcrestlem 22303 satfn 32984 hfuni 34172 hfninf 34174 finxpreclem4 35251 |
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