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| Mirrors > Home > ILE Home > Th. List > opelcnv | Unicode version | ||
| Description: Ordered-pair membership in converse. (Contributed by NM, 13-Aug-1995.) |
| Ref | Expression |
|---|---|
| opelcnv.1 |
|
| opelcnv.2 |
|
| Ref | Expression |
|---|---|
| opelcnv |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opelcnv.1 |
. 2
| |
| 2 | opelcnv.2 |
. 2
| |
| 3 | opelcnvg 4958 |
. 2
| |
| 4 | 1, 2, 3 | mp2an 430 |
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 4247 ax-pow 4309 ax-pr 4344 |
| 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-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3714 df-pr 3715 df-op 3717 df-br 4129 df-opab 4191 df-cnv 4780 |
| This theorem is referenced by: cnvopab 5187 cnv0 5189 cnvdif 5192 dfrel2 5236 cnvcnvsn 5262 cnvresima 5275 dfco2 5285 cnviinm 5327 fcnvres 5573 cnvimadfsn 6479 dmtpos 6521 dftpos4 6528 tpostpos 6529 fisumcom2 12188 fprodcom2fi 12376 |
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