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Related theorems Unicode version |
| Description: Equinumerosity implies dominance. |
| Ref | Expression |
|---|---|
| enssdom |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relen 5592 |
. 2
| |
| 2 | f1of1 4722 |
. . . . 5
| |
| 3 | 2 | eximi 1676 |
. . . 4
|
| 4 | opabid 3720 |
. . . 4
| |
| 5 | opabid 3720 |
. . . 4
| |
| 6 | 3, 4, 5 | 3imtr4i 328 |
. . 3
|
| 7 | df-en 5588 |
. . . 4
| |
| 8 | 7 | eleq2i 2208 |
. . 3
|
| 9 | df-dom 5589 |
. . . 4
| |
| 10 | 9 | eleq2i 2208 |
. . 3
|
| 11 | 6, 8, 10 | 3imtr4i 328 |
. 2
|
| 12 | 1, 11 | relssi 4210 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: dfdom2 5604 endom 5605 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1592 ax-gen 1593 ax-8 1594 ax-9 1595 ax-10 1596 ax-11 1597 ax-12 1598 ax-14 1600 ax-17 1605 ax-4 1608 ax-5o 1610 ax-6o 1613 ax-9o 1763 ax-10o 1781 ax-16 1854 ax-11o 1864 ax-ext 2123 ax-sep 3606 ax-nul 3613 ax-pow 3649 ax-pr 3687 |
| This theorem depends on definitions: df-bi 220 df-or 338 df-an 339 df-ex 1616 df-sb 1816 df-eu 2041 df-mo 2042 df-clab 2129 df-cleq 2134 df-clel 2137 df-ne 2268 df-v 2540 df-dif 2830 df-un 2832 df-in 2834 df-ss 2836 df-nul 3083 df-pw 3229 df-sn 3242 df-pr 3243 df-op 3246 df-opab 3566 df-xp 4133 df-rel 4134 df-f1o 4146 df-en 5588 df-dom 5589 |