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Related theorems Unicode version |
| Description: Image of a singleton. |
| Ref | Expression |
|---|---|
| imasn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | snprc 1838 |
. . . . . . 7
| |
| 2 | imaeq2 2603 |
. . . . . . 7
| |
| 3 | 1, 2 | sylbi 174 |
. . . . . 6
|
| 4 | ima0 2615 |
. . . . . 6
| |
| 5 | 3, 4 | syl6eq 1140 |
. . . . 5
|
| 6 | 5 | adantl 305 |
. . . 4
|
| 7 | df-rel 2425 |
. . . . . . . . . 10
| |
| 8 | ssel 1502 |
. . . . . . . . . 10
| |
| 9 | 7, 8 | sylbi 174 |
. . . . . . . . 9
|
| 10 | opelxpex 2445 |
. . . . . . . . 9
| |
| 11 | 9, 10 | syl6 23 |
. . . . . . . 8
|
| 12 | 11 | con3d 87 |
. . . . . . 7
|
| 13 | 12 | imp 277 |
. . . . . 6
|
| 14 | 13 | nexdv 983 |
. . . . 5
|
| 15 | abn0 1715 |
. . . . . 6
| |
| 16 | 15 | bicon1i 193 |
. . . . 5
|
| 17 | 14, 16 | sylib 173 |
. . . 4
|
| 18 | 6, 17 | eqtr4d 1131 |
. . 3
|
| 19 | 18 | exp 291 |
. 2
|
| 20 | opeq1 1876 |
. . . . . . 7
| |
| 21 | 20 | eleq1d 1155 |
. . . . . 6
|
| 22 | 21 | ceqsexgv 1412 |
. . . . 5
|
| 23 | elsn 1820 |
. . . . . . 7
| |
| 24 | 23 | anbi1i 368 |
. . . . . 6
|
| 25 | 24 | biex 733 |
. . . . 5
|
| 26 | 22, 25 | syl5bb 410 |
. . . 4
|
| 27 | 26 | biabdv 1183 |
. . 3
|
| 28 | dfima3 2605 |
. . 3
| |
| 29 | 27, 28 | syl5eq 1136 |
. 2
|
| 30 | 19, 29 | pm2.61d2 111 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: fnsnfv 2861 funfv2 2863 mapsn 3269 aceq3 3556 |
| 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-rex 1206 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 df-dm 2428 df-rn 2429 df-res 2430 df-ima 2431 |