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| Mirrors > Home > ILE Home > Th. List > dfrel2 | Unicode version | ||
| Description: Alternate definition of relation. Exercise 2 of [TakeutiZaring] p. 25. (Contributed by NM, 29-Dec-1996.) |
| Ref | Expression |
|---|---|
| dfrel2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relcnv 5140 |
. . 3
| |
| 2 | vex 2816 |
. . . . . 6
| |
| 3 | vex 2816 |
. . . . . 6
| |
| 4 | 2, 3 | opelcnv 4937 |
. . . . 5
|
| 5 | 3, 2 | opelcnv 4937 |
. . . . 5
|
| 6 | 4, 5 | bitri 184 |
. . . 4
|
| 7 | 6 | eqrelriv 4843 |
. . 3
|
| 8 | 1, 7 | mpan 424 |
. 2
|
| 9 | releq 4832 |
. . 3
| |
| 10 | 1, 9 | mpbii 148 |
. 2
|
| 11 | 8, 10 | impbii 126 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2206 ax-ext 2214 ax-sep 4228 ax-pow 4287 ax-pr 4322 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ral 2525 df-rex 2526 df-v 2815 df-un 3215 df-in 3217 df-ss 3224 df-pw 3671 df-sn 3695 df-pr 3696 df-op 3698 df-br 4110 df-opab 4172 df-xp 4755 df-rel 4756 df-cnv 4757 |
| This theorem is referenced by: dfrel4v 5214 cnvcnv 5215 cnveqb 5218 dfrel3 5220 cnvcnvres 5226 cnvsn 5245 cores2 5275 co01 5277 coi2 5279 relcnvtr 5282 relcnvexb 5302 funcnvres2 5431 f1cnvcnv 5584 f1ocnv 5627 f1ocnvb 5628 f1ococnv1 5643 isores1 5987 cnvf1o 6421 tposf12 6500 ssenen 7105 relcnvfi 7208 caseinl 7382 caseinr 7383 fsumcnv 12123 fprodcnv 12311 structcnvcnv 13228 hmeocnv 15172 hmeocnvb 15183 |
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