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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 5112 |
. . 3
| |
| 2 | vex 2803 |
. . . . . 6
| |
| 3 | vex 2803 |
. . . . . 6
| |
| 4 | 2, 3 | opelcnv 4910 |
. . . . 5
|
| 5 | 3, 2 | opelcnv 4910 |
. . . . 5
|
| 6 | 4, 5 | bitri 184 |
. . . 4
|
| 7 | 6 | eqrelriv 4817 |
. . 3
|
| 8 | 1, 7 | mpan 424 |
. 2
|
| 9 | releq 4806 |
. . 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-14 2203 ax-ext 2211 ax-sep 4205 ax-pow 4262 ax-pr 4297 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2802 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-br 4087 df-opab 4149 df-xp 4729 df-rel 4730 df-cnv 4731 |
| This theorem is referenced by: dfrel4v 5186 cnvcnv 5187 cnveqb 5190 dfrel3 5192 cnvcnvres 5198 cnvsn 5217 cores2 5247 co01 5249 coi2 5251 relcnvtr 5254 relcnvexb 5274 funcnvres2 5402 f1cnvcnv 5550 f1ocnv 5593 f1ocnvb 5594 f1ococnv1 5609 isores1 5950 cnvf1o 6385 tposf12 6430 ssenen 7032 relcnvfi 7131 caseinl 7281 caseinr 7282 fsumcnv 11988 fprodcnv 12176 structcnvcnv 13088 hmeocnv 15021 hmeocnvb 15032 |
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