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Mirrors > Home > ILE Home > Th. List > cnvxp | Unicode version |
Description: The converse of a cross product. Exercise 11 of [Suppes] p. 67. (Contributed by NM, 14-Aug-1999.) (Proof shortened by Andrew Salmon, 27-Aug-2011.) |
Ref | Expression |
---|---|
cnvxp |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cnvopab 4726 | . . 3 | |
2 | ancom 253 | . . . 4 | |
3 | 2 | opabbii 3824 | . . 3 |
4 | 1, 3 | eqtri 2060 | . 2 |
5 | df-xp 4351 | . . 3 | |
6 | 5 | cnveqi 4510 | . 2 |
7 | df-xp 4351 | . 2 | |
8 | 4, 6, 7 | 3eqtr4i 2070 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 97 wceq 1243 wcel 1393 copab 3817 cxp 4343 ccnv 4344 |
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-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-eu 1903 df-mo 1904 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-xp 4351 df-rel 4352 df-cnv 4353 |
This theorem is referenced by: xp0 4743 rnxpm 4752 rnxpss 4754 dminxp 4765 imainrect 4766 tposfo 5886 tposf 5887 xpiderm 6177 xpcomf1o 6299 |
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