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Mirrors > Home > ILE Home > Th. List > soirri | Unicode version |
Description: A strict order relation is irreflexive. (Contributed by NM, 10-Feb-1996.) (Revised by Mario Carneiro, 10-May-2013.) |
Ref | Expression |
---|---|
soi.1 | |
soi.2 |
Ref | Expression |
---|---|
soirri |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id 19 | . 2 | |
2 | soi.1 | . . 3 | |
3 | soi.2 | . . . . 5 | |
4 | 3 | brel 4392 | . . . 4 |
5 | 4 | simpld 105 | . . 3 |
6 | sonr 4054 | . . 3 | |
7 | 2, 5, 6 | sylancr 393 | . 2 |
8 | 1, 7 | pm2.65i 568 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wcel 1393 wss 2917 class class class wbr 3764 wor 4032 cxp 4343 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-in1 544 ax-in2 545 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-14 1405 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 ax-sep 3875 ax-pow 3927 ax-pr 3944 |
This theorem depends on definitions: df-bi 110 df-3an 887 df-tru 1246 df-nf 1350 df-sb 1646 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-ral 2311 df-rex 2312 df-v 2559 df-un 2922 df-in 2924 df-ss 2931 df-pw 3361 df-sn 3381 df-pr 3382 df-op 3384 df-br 3765 df-opab 3819 df-po 4033 df-iso 4034 df-xp 4351 |
This theorem is referenced by: son2lpi 4721 ltsonq 6496 genpdisj 6621 ltposr 6848 axpre-ltirr 6956 |
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