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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 6362 | . 2 ⊢ (𝐴 ∈ On → Ord 𝐴) | |
| 2 | eloni 6362 | . 2 ⊢ (𝐵 ∈ On → Ord 𝐵) | |
| 3 | ordtri1 6386 | . 2 ⊢ ((Ord 𝐴 ∧ Ord 𝐵) → (𝐴 ⊆ 𝐵 ↔ ¬ 𝐵 ∈ 𝐴)) | |
| 4 | 1, 2, 3 | syl2an 608 | 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 401 ∈ wcel 2145 ⊆ wss 3899 Ord word 6351 Oncon0 6352 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2732 ax-sep 5249 ax-pr 5391 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2739 df-cleq 2752 df-clel 2835 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-tr 5213 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-we 5603 df-ord 6355 df-on 6356 |
| This theorem is used by: oneqmini 6406 onmindif 6447 onint 7788 onnmin 7796 onmindif2 7805 dfom2 7863 ondif2 8489 oaword 8536 oawordeulem 8541 oaf1o 8550 odi 8566 omeulem1 8569 oeeulem 8589 oeeui 8590 nnmword 8621 cofonr 8662 naddel1 8676 naddss1 8678 domtriord 9121 sdomel 9122 onsdominel 9124 ordunifi 9260 cantnfp1lem3 9659 oemapvali 9663 cantnflem1b 9665 cantnflem1 9668 cnfcom3lem 9682 rankr1clem 9802 rankelb 9806 rankval3b 9808 rankr1a 9818 unbndrank 9825 rankxplim3 9867 cardne 10003 carden2b 10005 cardsdomel 10012 carddom2 10015 harcard 10016 domtri2 10027 infxpenlem 10049 alephord 10111 alephord3 10114 alephle 10124 dfac12k 10183 cflim2 10298 cofsmo 10304 cfsmolem 10305 isf32lem5 10392 pwcfsdom 10625 pwfseqlem3 10702 inar1 10817 om2uzlt2i 14048 ltsval2 27932 ltsres 27938 nosepssdm 27962 nolt02olem 27970 nolt02o 27971 nogt01o 27972 noetasuplem4 28012 noetainflem4 28016 nocvxminlem 28059 madebdaylemlrcut 28204 oncutlt 28569 onnolt 28571 onles 28573 oniso 28576 om2noseqlt2 28605 bdaypw2bnd 28770 bdayfinbndlem1 28772 nummin 35639 vonf1wev 35806 vonf1owevOLD 35808 ltnmul 36881 nmulle 36882 ltnadd 36883 naddle 36884 onsuct0 37145 onint1 37153 onmaxnelsup 44162 onsupnmax 44167 onsupuni 44168 oninfint 44175 onsupmaxb 44178 onsupeqnmax 44186 oe0suclim 44216 cantnfresb 44263 cantnf2 44264 tfsconcatfv 44280 tfsnfin 44291 oadif1lem 44318 oadif1 44319 naddwordnexlem4 44340 ontric3g 44460 infordmin 44470 minregex 44472 alephiso3 44497 hashnnltb 45944 |
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