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| Description: A trichotomy law for ordinal numbers. |
| Ref | Expression |
|---|---|
| ontri1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ordtri1 2970 |
. 2
| |
| 2 | eloni 2948 |
. 2
| |
| 3 | eloni 2948 |
. 2
| |
| 4 | 1, 2, 3 | syl2an 454 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: onint 2996 onnmin 3005 oneqmini 3007 onmindif 3050 onmindif2 3051 dfom2 3123 oawordeulem 4172 odi 4194 rankr1lem 4645 rankr1 4646 rankr1a 4649 rankel 4652 unbndrank 4655 rankxplim3 4686 cardne 4802 carden 4803 carddom 4808 domtri 4810 sdomel 4819 cardsdomel 4824 ondomcard 4829 cardprc 4833 alephord 4847 alephord3 4850 alephle 4856 om2uzlt2 6236 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-10 963 ax-11 964 ax-12 965 ax-13 966 ax-14 967 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 ax-sep 2693 ax-pow 2732 ax-pr 2769 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 774 df-3an 775 df-ex 978 df-sb 1168 df-eu 1375 df-mo 1376 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-ral 1641 df-rex 1642 df-v 1803 df-dif 2039 df-un 2040 df-in 2041 df-ss 2043 df-nul 2271 df-pw 2392 df-sn 2402 df-pr 2403 df-op 2406 df-uni 2494 df-br 2610 df-opab 2657 df-tr 2671 df-eprel 2821 df-po 2831 df-so 2841 df-fr 2907 df-we 2924 df-ord 2941 df-on 2942 |