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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 5572 | . 2 ⊢ (𝑅 Or 𝐴 → 𝑅 Po 𝐴) | |
| 2 | poirr 5565 | . 2 ⊢ ((𝑅 Po 𝐴 ∧ 𝐵 ∈ 𝐴) → ¬ 𝐵𝑅𝐵) | |
| 3 | 1, 2 | sylan 589 | 1 ⊢ ((𝑅 Or 𝐴 ∧ 𝐵 ∈ 𝐴) → ¬ 𝐵𝑅𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 399 ∈ wcel 2141 class class class wbr 5099 Po wpo 5551 Or wor 5552 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-ral 3076 df-rab 3414 df-v 3455 df-dif 3907 df-un 3909 df-ss 3921 df-nul 4286 df-if 4480 df-sn 4582 df-pr 4584 df-op 4588 df-br 5100 df-po 5553 df-so 5554 |
| This theorem is referenced by: sotric 5583 sotrieq 5584 soirri 6110 suppr 9415 infpr 9448 hartogslem1 9487 canth4 10602 canthwelem 10605 pwfseqlem4 10617 1ne0sr 11051 ltnr 11275 opsrtoslem2 22089 nodenselem4 27728 nodenselem5 27729 nodenselem7 27731 nolt02o 27736 nogt01o 27737 noresle 27738 nosupbnd1lem1 27749 nosupbnd2lem1 27756 noinfbnd1lem1 27764 noinfbnd2lem1 27771 ltsirr 27787 weiunpo 36789 fin2solem 38069 fin2so 38070 |
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