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| Mirrors > Home > MPE Home > Th. List > sonr | Structured version Visualization version GIF version | ||
| Description: A strict order relation is irreflexive. (Contributed by NM, 24-Nov-1995.) |
| Ref | Expression |
|---|---|
| sonr | ⊢ ((𝑅 Or 𝐴 ∧ 𝐵 ∈ 𝐴) → ¬ 𝐵𝑅𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sopo 5578 | . 2 ⊢ (𝑅 Or 𝐴 → 𝑅 Po 𝐴) | |
| 2 | poirr 5571 | . 2 ⊢ ((𝑅 Po 𝐴 ∧ 𝐵 ∈ 𝐴) → ¬ 𝐵𝑅𝐵) | |
| 3 | 1, 2 | sylan 592 | 1 ⊢ ((𝑅 Or 𝐴 ∧ 𝐵 ∈ 𝐴) → ¬ 𝐵𝑅𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 401 ∈ wcel 2145 class class class wbr 5103 Po wpo 5557 Or wor 5558 |
| 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 2733 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2740 df-cleq 2753 df-clel 2836 df-ral 3078 df-rab 3414 df-v 3453 df-dif 3902 df-un 3904 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-br 5104 df-po 5559 df-so 5560 |
| This theorem is used by: sotric 5589 sotrieq 5590 soirri 6118 suppr 9448 infpr 9481 hartogslem1 9520 canth4 10713 canthwelem 10716 pwfseqlem4 10728 1ne0sr 11162 ltnr 11386 opsrtoslem2 22345 nodenselem4 28026 nodenselem5 28027 nodenselem7 28029 nolt02o 28034 nogt01o 28035 noresle 28036 nosupbnd1lem1 28047 nosupbnd2lem1 28054 noinfbnd1lem1 28062 noinfbnd2lem1 28069 ltsirr 28085 weiunpo 37223 fin2solem 38497 fin2so 38498 |
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