| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 5160 |
. . 3
| |
| 2 | vex 2824 |
. . . . . 6
| |
| 3 | vex 2824 |
. . . . . 6
| |
| 4 | 2, 3 | opelcnv 4957 |
. . . . 5
|
| 5 | 3, 2 | opelcnv 4957 |
. . . . 5
|
| 6 | 4, 5 | bitri 184 |
. . . 4
|
| 7 | 6 | eqrelriv 4863 |
. . 3
|
| 8 | 1, 7 | mpan 428 |
. 2
|
| 9 | releq 4852 |
. . 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 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4244 ax-pow 4306 ax-pr 4341 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-br 4126 df-opab 4188 df-xp 4775 df-rel 4776 df-cnv 4777 |
| This theorem is referenced by: dfrel4v 5234 cnvcnv 5235 cnveqb 5238 dfrel3 5240 cnvcnvres 5246 cnvsn 5265 cores2 5295 co01 5297 coi2 5299 relcnvtr 5302 relcnvexb 5322 funcnvres2 5451 f1cnvcnv 5604 f1ocnv 5647 f1ocnvb 5648 f1ococnv1 5663 isores1 6010 cnvf1o 6451 tposf12 6530 ssenen 7142 relcnvfi 7245 caseinl 7421 caseinr 7422 fsumcnv 12182 fprodcnv 12370 structcnvcnv 13346 hmeocnv 15331 hmeocnvb 15342 |
| Copyright terms: Public domain | W3C validator |