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Mirrors > Home > ILE Home > Th. List > xpidtr | Unicode version |
Description: A square cross product is a transitive relation. (Contributed by FL, 31-Jul-2009.) |
Ref | Expression |
---|---|
xpidtr |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | brxp 4640 | . . . . . 6 | |
2 | brxp 4640 | . . . . . . . . 9 | |
3 | brxp 4640 | . . . . . . . . . . 11 | |
4 | 3 | simplbi2com 1437 | . . . . . . . . . 10 |
5 | 4 | adantl 275 | . . . . . . . . 9 |
6 | 2, 5 | sylbi 120 | . . . . . . . 8 |
7 | 6 | com12 30 | . . . . . . 7 |
8 | 7 | adantr 274 | . . . . . 6 |
9 | 1, 8 | sylbi 120 | . . . . 5 |
10 | 9 | imp 123 | . . . 4 |
11 | 10 | ax-gen 1442 | . . 3 |
12 | 11 | gen2 1443 | . 2 |
13 | cotr 4990 | . 2 | |
14 | 12, 13 | mpbir 145 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wal 1346 wcel 2141 wss 3121 class class class wbr 3987 cxp 4607 ccom 4613 |
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 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-14 2144 ax-ext 2152 ax-sep 4105 ax-pow 4158 ax-pr 4192 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ral 2453 df-rex 2454 df-v 2732 df-un 3125 df-in 3127 df-ss 3134 df-pw 3566 df-sn 3587 df-pr 3588 df-op 3590 df-br 3988 df-opab 4049 df-xp 4615 df-rel 4616 df-co 4618 |
This theorem is referenced by: trinxp 5002 xpider 6582 |
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