| Metamath Proof Explorer |
< Previous
Next >
Related theorems Unicode version |
| Description: The converse of the empty set. |
| Ref | Expression |
|---|---|
| cnv0 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relcnv 3427 |
. 2
| |
| 2 | rel0 3267 |
. 2
| |
| 3 | visset 1809 |
. . . 4
| |
| 4 | visset 1809 |
. . . 4
| |
| 5 | 3, 4 | opelcnv 3293 |
. . 3
|
| 6 | noel 2280 |
. . . 4
| |
| 7 | noel 2280 |
. . . 4
| |
| 8 | 6, 7 | 2false 718 |
. . 3
|
| 9 | 5, 8 | bitr4 176 |
. 2
|
| 10 | 1, 2, 9 | eqrelriv 3246 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: xp0 3457 co01 3501 f10 3704 f1o00 3705 cnconst 7730 |
| 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 |