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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 4956 | . 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 4775 |
| 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: mptcnv 5193 cnvxp 5209 xp0 5210 imainrect 5236 cnvcnv 5243 mptpreima 5284 co01 5305 coi2 5307 cocnvres 5315 fcoi1 5575 fun11iun 5663 f1ocnvd 6295 cnvoprab 6474 f1od2 6475 mapsncnv 6981 sbthlemi8 7286 caseinj 7435 djuinj 7452 fisumcom2 12230 fprodcom2fi 12418 ballotfilemrinv 13335 |
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