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| Mirrors > Home > ILE Home > Th. List > cnveqd | Unicode version | ||
| Description: Equality deduction for converse. (Contributed by NM, 6-Dec-2013.) |
| Ref | Expression |
|---|---|
| cnveqd.1 |
|
| Ref | Expression |
|---|---|
| cnveqd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnveqd.1 |
. 2
| |
| 2 | cnveq 4956 |
. 2
| |
| 3 | 1, 2 | syl 14 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on 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-ext 2220 |
| This proof depends on definitions: df-bi 117 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-in 3226 df-ss 3233 df-br 4132 df-opab 4194 df-cnv 4784 |
| This theorem is used by: cnvsng 5276 cores2 5303 f1o3d 6301 suppssof1 6324 2ndval2 6394 2nd1st 6418 cnvf1olem 6464 brtpos2 6526 dftpos4 6538 tpostpos 6539 tposf12 6544 xpcomco 7128 infeq123d 7362 fsumcnv 12229 fprodcnv 12417 ennnfonelemf1 13367 strslfv3 13456 grpinvcnv 13932 grplactcnv 13966 eqglact 14087 gsumcom2fi 14275 xpsval 14308 isunitd 14522 znval 15080 znle2 15096 txswaphmeolem 15546 |
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