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| Description: Define the restriction of a class. Definition 6.6(1) of [TakeutiZaring] p. 24. |
| Ref | Expression |
|---|---|
| df-res |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cA |
. . 3
| |
| 2 | cB |
. . 3
| |
| 3 | 1, 2 | cres 3170 |
. 2
|
| 4 | cvv 1809 |
. . . 4
| |
| 5 | 2, 4 | cxp 3166 |
. . 3
|
| 6 | 1, 5 | cin 2044 |
. 2
|
| 7 | 3, 6 | wceq 956 |
1
|
| Colors of variables: wff set class |
| This definition is referenced by: reseq1 3366 reseq2 3367 hbres 3368 res0 3369 opelres 3370 resres 3375 resundi 3376 resundir 3377 resss 3381 ssres 3383 ssres2 3384 relres 3385 resexg 3392 resopab 3393 dfima2 3403 resdisj 3469 ssrnres 3479 cnvcnv2 3485 rescnvcnv 3491 resdmres 3495 |