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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 2624 |
. 2
| |
| 2 | cnvsn.2 |
. . 3
| |
| 3 | 2 | relsn 2485 |
. 2
|
| 4 | ancom 333 |
. . 3
| |
| 5 | opex 1893 |
. . . . 5
| |
| 6 | 5 | elsnc 1826 |
. . . 4
|
| 7 | visset 1350 |
. . . . 5
| |
| 8 | visset 1350 |
. . . . 5
| |
| 9 | cnvsn.1 |
. . . . 5
| |
| 10 | 7, 8, 9 | opth 1898 |
. . . 4
|
| 11 | 6, 10 | bitr 151 |
. . 3
|
| 12 | 7, 8 | opelcnv 2518 |
. . . 4
|
| 13 | opex 1893 |
. . . . 5
| |
| 14 | 13 | elsnc 1826 |
. . . 4
|
| 15 | 8, 7, 2 | opth 1898 |
. . . 4
|
| 16 | 12, 14, 15 | 3bitr 155 |
. . 3
|
| 17 | 4, 11, 16 | 3bitr4r 159 |
. 2
|
| 18 | 1, 3, 17 | cleqreli 2484 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: rnsnop 2637 op2ndb 2638 op2nda 2639 f1osn 2827 xpcomen 3343 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-pow 1077 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-ex 679 df-sb 853 df-clab 1093 df-cleq 1097 df-clel 1099 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-op 1815 df-br 2063 df-opab 2098 df-xp 2424 df-rel 2425 df-cnv 2426 |