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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 5593 | . 2 ⊢ (𝑅 Or 𝐴 → 𝑅 Po 𝐴) | |
| 2 | poirr 5586 | . 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 2146 class class class wbr 5114 Po wpo 5572 Or wor 5573 |
| 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 2148 ax-9 2156 ax-ext 2738 |
| 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 2745 df-cleq 2758 df-clel 2841 df-ral 3083 df-rab 3420 df-v 3460 df-dif 3911 df-un 3913 df-ss 3925 df-nul 4290 df-if 4493 df-sn 4595 df-pr 4597 df-op 4601 df-br 5115 df-po 5574 df-so 5575 |
| This theorem is used by: sotric 5604 sotrieq 5605 soirri 6131 suppr 9442 infpr 9475 hartogslem1 9514 canth4 10650 canthwelem 10653 pwfseqlem4 10665 1ne0sr 11099 ltnr 11323 opsrtoslem2 22244 nodenselem4 27888 nodenselem5 27889 nodenselem7 27891 nolt02o 27896 nogt01o 27897 noresle 27898 nosupbnd1lem1 27909 nosupbnd2lem1 27916 noinfbnd1lem1 27924 noinfbnd2lem1 27931 ltsirr 27947 weiunpo 37017 fin2solem 38298 fin2so 38299 |
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