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| Mirrors > Home > MPE Home > Th. List > ontri1 | Structured version Visualization version GIF version | ||
| Description: A trichotomy law for ordinal numbers. (Contributed by NM, 6-Nov-2003.) |
| Ref | Expression |
|---|---|
| ontri1 | ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ⊆ 𝐵 ↔ ¬ 𝐵 ∈ 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eloni 6370 | . 2 ⊢ (𝐴 ∈ On → Ord 𝐴) | |
| 2 | eloni 6370 | . 2 ⊢ (𝐵 ∈ On → Ord 𝐵) | |
| 3 | ordtri1 6394 | . 2 ⊢ ((Ord 𝐴 ∧ Ord 𝐵) → (𝐴 ⊆ 𝐵 ↔ ¬ 𝐵 ∈ 𝐴)) | |
| 4 | 1, 2, 3 | syl2an 607 | 1 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ⊆ 𝐵 ↔ ¬ 𝐵 ∈ 𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 400 ∈ wcel 2142 ⊆ wss 3904 Ord word 6359 Oncon0 6360 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-ext 2734 ax-sep 5256 ax-pr 5403 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-sb 2096 df-clab 2741 df-cleq 2754 df-clel 2837 df-ne 2958 df-ral 3079 df-rex 3089 df-rab 3416 df-v 3456 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-br 5109 df-opab 5173 df-tr 5218 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-ord 6363 df-on 6364 |
| This theorem is used by: oneqmini 6414 onmindif 6455 onint 7787 onnmin 7795 onmindif2 7804 dfom2 7862 ondif2 8485 oaword 8532 oawordeulem 8537 oaf1o 8546 odi 8562 omeulem1 8565 oeeulem 8585 oeeui 8586 nnmword 8617 cofonr 8658 naddel1 8672 naddss1 8674 domtriord 9109 sdomel 9110 onsdominel 9112 ordunifi 9248 cantnfp1lem3 9647 oemapvali 9651 cantnflem1b 9653 cantnflem1 9656 cnfcom3lem 9670 rankr1clem 9790 rankelb 9794 rankval3b 9796 rankr1a 9806 unbndrank 9812 rankxplim3 9851 cardne 9958 carden2b 9960 cardsdomel 9967 carddom2 9970 harcard 9971 domtri2 9982 infxpenlem 10004 alephord 10066 alephord3 10069 alephle 10079 dfac12k 10138 cflim2 10253 cofsmo 10259 cfsmolem 10260 isf32lem5 10347 pwcfsdom 10574 pwfseqlem3 10651 inar1 10766 om2uzlt2i 13994 ltsval2 27831 ltsres 27837 nosepssdm 27861 nolt02olem 27869 nolt02o 27870 nogt01o 27871 noetasuplem4 27911 noetainflem4 27915 nocvxminlem 27958 madebdaylemlrcut 28103 oncutlt 28468 onnolt 28470 onles 28472 oniso 28475 om2noseqlt2 28504 bdaypw2bnd 28669 bdayfinbndlem1 28671 nummin 35493 vonf1wev 35600 vonf1owevOLD 35602 ltnmul 36716 nmulle 36717 ltnadd 36718 naddle 36719 onsuct0 36980 onint1 36988 onmaxnelsup 43978 onsupnmax 43983 onsupuni 43984 oninfint 43991 onsupmaxb 43994 onsupeqnmax 44002 oe0suclim 44032 cantnfresb 44079 cantnf2 44080 tfsconcatfv 44096 tfsnfin 44107 oadif1lem 44134 oadif1 44135 naddwordnexlem4 44156 ontric3g 44276 infordmin 44286 minregex 44288 alephiso3 44313 hashnnltb 45760 |
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