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| Description: Converse of a singleton of an ordered pair. |
| Ref | Expression |
|---|---|
| cnvsn.1 |
|
| cnvsn.2 |
|
| Ref | Expression |
|---|---|
| cnvsn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relcnv 3427 |
. 2
| |
| 2 | cnvsn.2 |
. . 3
| |
| 3 | 2 | relsn 3249 |
. 2
|
| 4 | ancom 435 |
. . 3
| |
| 5 | opex 2777 |
. . . . 5
| |
| 6 | 5 | elsnc 2427 |
. . . 4
|
| 7 | visset 1809 |
. . . . 5
| |
| 8 | visset 1809 |
. . . . 5
| |
| 9 | cnvsn.1 |
. . . . 5
| |
| 10 | 7, 8, 9 | opth 2782 |
. . . 4
|
| 11 | 6, 10 | bitr 173 |
. . 3
|
| 12 | 7, 8 | opelcnv 3293 |
. . . 4
|
| 13 | opex 2777 |
. . . . 5
| |
| 14 | 13 | elsnc 2427 |
. . . 4
|
| 15 | 8, 7, 2 | opth 2782 |
. . . 4
|
| 16 | 12, 14, 15 | 3bitr 177 |
. . 3
|
| 17 | 4, 11, 16 | 3bitr4r 184 |
. 2
|
| 18 | 1, 3, 17 | eqrelriv 3246 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: rnsnop 3442 op2ndb 3443 op2nda 3444 f1osn 3710 xpcomen 4425 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-11 965 ax-12 966 ax-13 967 ax-14 968 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 ax-sep 2698 ax-pow 2737 ax-pr 2774 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 979 df-sb 1170 df-eu 1380 df-mo 1381 df-clab 1462 df-cleq 1467 df-clel 1470 df-ne 1584 df-v 1808 df-dif 2045 df-un 2046 df-in 2047 df-ss 2049 df-nul 2277 df-pw 2398 df-sn 2408 df-pr 2409 df-op 2412 df-br 2615 df-opab 2662 df-xp 3179 df-rel 3180 df-cnv 3181 |