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Related theorems Unicode version |
| Description: Ordered pair membership in a composition. |
| Ref | Expression |
|---|---|
| opelcog |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opeq1 2541 |
. . . . 5
| |
| 2 | 1 | eleq1d 1587 |
. . . 4
|
| 3 | breq1 2677 |
. . . . . 6
| |
| 4 | 3 | anbi1d 628 |
. . . . 5
|
| 5 | 4 | exbidv 1321 |
. . . 4
|
| 6 | 2, 5 | bibi12d 640 |
. . 3
|
| 7 | opeq2 2542 |
. . . . 5
| |
| 8 | 7 | eleq1d 1587 |
. . . 4
|
| 9 | breq2 2678 |
. . . . . 6
| |
| 10 | 9 | anbi2d 627 |
. . . . 5
|
| 11 | 10 | exbidv 1321 |
. . . 4
|
| 12 | 8, 11 | bibi12d 640 |
. . 3
|
| 13 | visset 1860 |
. . . 4
| |
| 14 | visset 1860 |
. . . 4
| |
| 15 | 13, 14 | opelco 3345 |
. . 3
|
| 16 | 6, 12, 15 | vtocl2g 1897 |
. 2
|
| 17 | df-br 2675 |
. . . 4
| |
| 18 | df-br 2675 |
. . . 4
| |
| 19 | 17, 18 | anbi12i 493 |
. . 3
|
| 20 | 19 | exbii 1092 |
. 2
|
| 21 | 16, 20 | syl6bb 547 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: fcoi1 3702 fcoi2 3703 dmfco 3830 fvco 3831 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1003 ax-gen 1004 ax-8 1005 ax-10 1007 ax-11 1008 ax-12 1009 ax-13 1010 ax-14 1011 ax-17 1012 ax-4 1014 ax-5o 1016 ax-6o 1019 ax-9o 1164 ax-10o 1182 ax-16 1252 ax-11o 1260 ax-ext 1504 ax-sep 2758 ax-pow 2798 ax-pr 2835 |
| This theorem depends on definitions: df-bi 154 df-or 231 df-an 232 df-ex 1022 df-sb 1214 df-eu 1424 df-mo 1425 df-clab 1510 df-cleq 1515 df-clel 1518 df-ne 1634 df-v 1859 df-dif 2100 df-un 2101 df-in 2102 df-ss 2104 df-nul 2332 df-pw 2454 df-sn 2464 df-pr 2465 df-op 2468 df-br 2675 df-opab 2722 df-co 3244 |