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| Mirrors > Home > ILE Home > Th. List > cnveq | Unicode version | ||
| Description: Equality theorem for converse. (Contributed by NM, 13-Aug-1995.) |
| Ref | Expression |
|---|---|
| cnveq |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnvss 4953 |
. . 3
| |
| 2 | cnvss 4953 |
. . 3
| |
| 3 | 1, 2 | anim12i 338 |
. 2
|
| 4 | eqss 3263 |
. 2
| |
| 5 | eqss 3263 |
. 2
| |
| 6 | 3, 4, 5 | 3imtr4i 201 |
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 4131 df-opab 4193 df-cnv 4782 |
| This theorem is used by: cnveqi 4955 cnveqd 4956 rneq 5009 cnveqb 5243 funcnvuni 5450 f1eq1 5593 f1ssf1 5671 f1o00 5676 foeqcnvco 5996 tposfn2 6537 ereq1 6814 infeq3 7355 1arith 13146 isrim0 14468 psrbag 15053 psr1clfi 15079 iscn 15298 ishmeo 15405 istrl 16626 |
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