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Mirrors > Home > ILE Home > Th. List > le2tri3i | Unicode version |
Description: Extended trichotomy law for 'less than or equal to'. (Contributed by NM, 14-Aug-2000.) |
Ref | Expression |
---|---|
lt.1 | |
lt.2 | |
lt.3 |
Ref | Expression |
---|---|
le2tri3i |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | lt.2 | . . . . . 6 | |
2 | lt.3 | . . . . . 6 | |
3 | lt.1 | . . . . . 6 | |
4 | 1, 2, 3 | letri 7218 | . . . . 5 |
5 | 3, 1 | letri3i 7209 | . . . . . 6 |
6 | 5 | biimpri 131 | . . . . 5 |
7 | 4, 6 | sylan2 280 | . . . 4 |
8 | 7 | 3impb 1134 | . . 3 |
9 | 2, 3, 1 | letri 7218 | . . . . . 6 |
10 | 1, 2 | letri3i 7209 | . . . . . . 7 |
11 | 10 | biimpri 131 | . . . . . 6 |
12 | 9, 11 | sylan2 280 | . . . . 5 |
13 | 12 | 3impb 1134 | . . . 4 |
14 | 13 | 3comr 1146 | . . 3 |
15 | 3, 1, 2 | letri 7218 | . . . . 5 |
16 | 3, 2 | letri3i 7209 | . . . . . . 7 |
17 | 16 | biimpri 131 | . . . . . 6 |
18 | 17 | eqcomd 2086 | . . . . 5 |
19 | 15, 18 | sylan 277 | . . . 4 |
20 | 19 | 3impa 1133 | . . 3 |
21 | 8, 14, 20 | 3jca 1118 | . 2 |
22 | 3 | eqlei 7204 | . . 3 |
23 | 1 | eqlei 7204 | . . 3 |
24 | 2 | eqlei 7204 | . . 3 |
25 | 22, 23, 24 | 3anim123i 1123 | . 2 |
26 | 21, 25 | impbii 124 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 102 wb 103 w3a 919 wceq 1284 wcel 1433 class class class wbr 3785 cr 6980 cle 7154 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 576 ax-in2 577 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-13 1444 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-sep 3896 ax-pow 3948 ax-pr 3964 ax-un 4188 ax-setind 4280 ax-cnex 7067 ax-resscn 7068 ax-pre-ltirr 7088 ax-pre-ltwlin 7089 ax-pre-apti 7091 |
This theorem depends on definitions: df-bi 115 df-3an 921 df-tru 1287 df-fal 1290 df-nf 1390 df-sb 1686 df-eu 1944 df-mo 1945 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ne 2246 df-nel 2340 df-ral 2353 df-rex 2354 df-rab 2357 df-v 2603 df-dif 2975 df-un 2977 df-in 2979 df-ss 2986 df-pw 3384 df-sn 3404 df-pr 3405 df-op 3407 df-uni 3602 df-br 3786 df-opab 3840 df-xp 4369 df-cnv 4371 df-pnf 7155 df-mnf 7156 df-xr 7157 df-ltxr 7158 df-le 7159 |
This theorem is referenced by: (None) |
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