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Related theorems Unicode version |
| Description: Ordered pair membership in a composition. |
| Ref | Expression |
|---|---|
| opelcog |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opeq1 1876 |
. . . . 5
| |
| 2 | 1 | eleq1d 1155 |
. . . 4
|
| 3 | breq1 2065 |
. . . . . 6
| |
| 4 | 3 | anbi1d 469 |
. . . . 5
|
| 5 | 4 | biexdv 936 |
. . . 4
|
| 6 | 2, 5 | bibi12d 477 |
. . 3
|
| 7 | opeq2 1877 |
. . . . 5
| |
| 8 | 7 | eleq1d 1155 |
. . . 4
|
| 9 | breq2 2066 |
. . . . . 6
| |
| 10 | 9 | anbi2d 468 |
. . . . 5
|
| 11 | 10 | biexdv 936 |
. . . 4
|
| 12 | 8, 11 | bibi12d 477 |
. . 3
|
| 13 | visset 1350 |
. . . 4
| |
| 14 | visset 1350 |
. . . 4
| |
| 15 | 13, 14 | opelco 2509 |
. . 3
|
| 16 | 6, 12, 15 | vtocl2g 1386 |
. 2
|
| 17 | df-br 2063 |
. . . 4
| |
| 18 | df-br 2063 |
. . . 4
| |
| 19 | 17, 18 | anbi12i 369 |
. . 3
|
| 20 | 19 | biex 733 |
. 2
|
| 21 | 16, 20 | syl6bb 414 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: fcoi1 2765 fcoi2 2766 dmfco 2864 fvco 2865 |
| 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-co 2427 |