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| Description: A trichotomy law for ordinal numbers. |
| Ref | Expression |
|---|---|
| ontri1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ordtri1 2975 |
. 2
| |
| 2 | eloni 2953 |
. 2
| |
| 3 | eloni 2953 |
. 2
| |
| 4 | 1, 2, 3 | syl2an 454 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: onint 3001 onnmin 3010 oneqmini 3012 onmindif 3055 onmindif2 3056 dfom2 3128 oawordeulem 4178 odi 4200 rankr1lem 4653 rankr1 4654 rankr1a 4657 rankel 4660 unbndrank 4663 rankxplim3 4694 cardne 4810 carden 4811 carddom 4816 domtri 4818 sdomel 4827 cardsdomel 4832 ondomcard 4837 cardprc 4841 alephord 4855 alephord3 4858 alephle 4864 om2uzlt2 6244 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-11 965 ax-12 966 ax-13 967 ax-14 968 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 ax-sep 2698 ax-pow 2737 ax-pr 2774 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 775 df-3an 776 df-ex 979 df-sb 1170 df-eu 1380 df-mo 1381 df-clab 1462 df-cleq 1467 df-clel 1470 df-ne 1584 df-ral 1646 df-rex 1647 df-v 1808 df-dif 2045 df-un 2046 df-in 2047 df-ss 2049 df-nul 2277 df-pw 2398 df-sn 2408 df-pr 2409 df-op 2412 df-uni 2499 df-br 2615 df-opab 2662 df-tr 2676 df-eprel 2827 df-po 2835 df-so 2845 df-fr 2912 df-we 2929 df-ord 2946 df-on 2947 |