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| Mirrors > Home > ILE Home > Th. List > cnvf1o | Unicode version | ||
| Description: Describe a function that maps the elements of a set to its converse bijectively. (Contributed by Mario Carneiro, 27-Apr-2014.) |
| Ref | Expression |
|---|---|
| cnvf1o |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2081 |
. 2
| |
| 2 | snexg 3956 |
. . . 4
| |
| 3 | cnvexg 4875 |
. . . 4
| |
| 4 | uniexg 4193 |
. . . 4
| |
| 5 | 2, 3, 4 | 3syl 17 |
. . 3
|
| 6 | 5 | adantl 271 |
. 2
|
| 7 | snexg 3956 |
. . . 4
| |
| 8 | cnvexg 4875 |
. . . 4
| |
| 9 | uniexg 4193 |
. . . 4
| |
| 10 | 7, 8, 9 | 3syl 17 |
. . 3
|
| 11 | 10 | adantl 271 |
. 2
|
| 12 | cnvf1olem 5865 |
. . 3
| |
| 13 | relcnv 4723 |
. . . . 5
| |
| 14 | simpr 108 |
. . . . 5
| |
| 15 | cnvf1olem 5865 |
. . . . 5
| |
| 16 | 13, 14, 15 | sylancr 405 |
. . . 4
|
| 17 | dfrel2 4791 |
. . . . . . 7
| |
| 18 | eleq2 2142 |
. . . . . . 7
| |
| 19 | 17, 18 | sylbi 119 |
. . . . . 6
|
| 20 | 19 | anbi1d 452 |
. . . . 5
|
| 21 | 20 | adantr 270 |
. . . 4
|
| 22 | 16, 21 | mpbid 145 |
. . 3
|
| 23 | 12, 22 | impbida 560 |
. 2
|
| 24 | 1, 6, 11, 23 | f1od 5723 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| 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-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 |
| This theorem depends on definitions: df-bi 115 df-3an 921 df-tru 1287 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-ral 2353 df-rex 2354 df-v 2603 df-sbc 2816 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-mpt 3841 df-id 4048 df-xp 4369 df-rel 4370 df-cnv 4371 df-co 4372 df-dm 4373 df-rn 4374 df-iota 4887 df-fun 4924 df-fn 4925 df-f 4926 df-f1 4927 df-fo 4928 df-f1o 4929 df-fv 4930 df-1st 5787 df-2nd 5788 |
| This theorem is referenced by: tposf12 5907 cnven 6311 xpcomf1o 6322 |
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