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Mirrors > Home > ILE Home > Th. List > codir | Unicode version |
Description: Two ways of saying a relation is directed. (Contributed by Mario Carneiro, 22-Nov-2013.) |
Ref | Expression |
---|---|
codir |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opelxp 4609 | . . . 4 | |
2 | df-br 3962 | . . . . 5 | |
3 | vex 2712 | . . . . . 6 | |
4 | vex 2712 | . . . . . 6 | |
5 | brcodir 4966 | . . . . . 6 | |
6 | 3, 4, 5 | mp2an 423 | . . . . 5 |
7 | 2, 6 | bitr3i 185 | . . . 4 |
8 | 1, 7 | imbi12i 238 | . . 3 |
9 | 8 | 2albii 1448 | . 2 |
10 | relxp 4688 | . . 3 | |
11 | ssrel 4667 | . . 3 | |
12 | 10, 11 | ax-mp 5 | . 2 |
13 | r2al 2473 | . 2 | |
14 | 9, 12, 13 | 3bitr4i 211 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wb 104 wal 1330 wex 1469 wcel 2125 wral 2432 cvv 2709 wss 3098 cop 3559 class class class wbr 3961 cxp 4577 ccnv 4578 ccom 4583 wrel 4584 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1481 ax-10 1482 ax-11 1483 ax-i12 1484 ax-bndl 1486 ax-4 1487 ax-17 1503 ax-i9 1507 ax-ial 1511 ax-i5r 1512 ax-14 2128 ax-ext 2136 ax-sep 4078 ax-pow 4130 ax-pr 4164 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1740 df-eu 2006 df-mo 2007 df-clab 2141 df-cleq 2147 df-clel 2150 df-nfc 2285 df-ral 2437 df-rex 2438 df-v 2711 df-un 3102 df-in 3104 df-ss 3111 df-pw 3541 df-sn 3562 df-pr 3563 df-op 3565 df-br 3962 df-opab 4022 df-xp 4585 df-rel 4586 df-cnv 4587 df-co 4588 |
This theorem is referenced by: (None) |
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