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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 5583 | . 2 ⊢ (𝑅 Or 𝐴 → 𝑅 Po 𝐴) | |
| 2 | poirr 5576 | . 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 2147 class class class wbr 5106 Po wpo 5562 Or wor 5563 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 |
| 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 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-ral 3081 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4839 df-br 5107 df-po 5564 df-so 5565 |
| This theorem is used by: sotric 5594 sotrieq 5595 soirri 6133 suppr 9494 infpr 9527 hartogslem1 9566 canth4 10762 canthwelem 10765 pwfseqlem4 10777 1ne0sr 11211 ltnr 11435 opsrtoslem2 22398 nodenselem4 28077 nodenselem5 28078 nodenselem7 28080 nolt02o 28085 nogt01o 28086 noresle 28087 nosupbnd1lem1 28098 nosupbnd2lem1 28105 noinfbnd1lem1 28113 noinfbnd2lem1 28120 ltsirr 28136 weiunpo 37444 fin2solem 38734 fin2so 38735 |
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