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| Mirrors > Home > ILE Home > Th. List > cnveqi | GIF version | ||
| Description: Equality inference for converse. (Contributed by NM, 23-Dec-2008.) |
| Ref | Expression |
|---|---|
| cnveqi.1 | ⊢ 𝐴 = 𝐵 |
| Ref | Expression |
|---|---|
| cnveqi | ⊢ ◡𝐴 = ◡𝐵 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnveqi.1 | . 2 ⊢ 𝐴 = 𝐵 | |
| 2 | cnveq 4954 | . 2 ⊢ (𝐴 = 𝐵 → ◡𝐴 = ◡𝐵) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ ◡𝐴 = ◡𝐵 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: = wceq 1402 ◡ccnv 4773 |
| 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: mptcnv 5190 cnvxp 5206 xp0 5207 imainrect 5233 cnvcnv 5240 mptpreima 5281 co01 5302 coi2 5304 cocnvres 5312 fcoi1 5572 fun11iun 5660 f1ocnvd 6292 cnvoprab 6470 f1od2 6471 mapsncnv 6977 sbthlemi8 7281 caseinj 7429 djuinj 7446 fisumcom2 12205 fprodcom2fi 12393 ballotfilemrinv 13277 |
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