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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 6371 | . 2 ⊢ (𝐴 ∈ On → Ord 𝐴) | |
| 2 | eloni 6371 | . 2 ⊢ (𝐵 ∈ On → Ord 𝐵) | |
| 3 | ordtri1 6395 | . 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 3902 Ord word 6360 Oncon0 6361 |
| 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 2734 ax-sep 5255 ax-pr 5402 |
| 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 2741 df-cleq 2754 df-clel 2837 df-ne 2958 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-br 5108 df-opab 5172 df-tr 5217 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-ord 6364 df-on 6365 |
| This theorem is used by: oneqmini 6415 onmindif 6456 onint 7792 onnmin 7800 onmindif2 7809 dfom2 7867 ondif2 8492 oaword 8539 oawordeulem 8544 oaf1o 8553 odi 8569 omeulem1 8572 oeeulem 8592 oeeui 8593 nnmword 8624 cofonr 8665 naddel1 8679 naddss1 8681 domtriord 9124 sdomel 9125 onsdominel 9127 ordunifi 9263 cantnfp1lem3 9662 oemapvali 9666 cantnflem1b 9668 cantnflem1 9671 cnfcom3lem 9685 rankr1clem 9805 rankelb 9809 rankval3b 9811 rankr1a 9821 unbndrank 9827 rankxplim3 9866 cardne 9973 carden2b 9975 cardsdomel 9982 carddom2 9985 harcard 9986 domtri2 9997 infxpenlem 10019 alephord 10081 alephord3 10084 alephle 10094 dfac12k 10153 cflim2 10268 cofsmo 10274 cfsmolem 10275 isf32lem5 10362 pwcfsdom 10595 pwfseqlem3 10672 inar1 10787 om2uzlt2i 14017 ltsval2 27890 ltsres 27896 nosepssdm 27920 nolt02olem 27928 nolt02o 27929 nogt01o 27930 noetasuplem4 27970 noetainflem4 27974 nocvxminlem 28017 madebdaylemlrcut 28162 oncutlt 28527 onnolt 28529 onles 28531 oniso 28534 om2noseqlt2 28563 bdaypw2bnd 28728 bdayfinbndlem1 28730 nummin 35585 vonf1wev 35692 vonf1owevOLD 35694 ltnmul 36783 nmulle 36784 ltnadd 36785 naddle 36786 onsuct0 37047 onint1 37055 onmaxnelsup 44051 onsupnmax 44056 onsupuni 44057 oninfint 44064 onsupmaxb 44067 onsupeqnmax 44075 oe0suclim 44105 cantnfresb 44152 cantnf2 44153 tfsconcatfv 44169 tfsnfin 44180 oadif1lem 44207 oadif1 44208 naddwordnexlem4 44229 ontric3g 44349 infordmin 44359 minregex 44361 alephiso3 44386 hashnnltb 45833 |
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