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| Mirrors > Home > ILE Home > Th. List > cnveqd | GIF version | ||
| Description: Equality deduction for converse. (Contributed by NM, 6-Dec-2013.) |
| Ref | Expression |
|---|---|
| cnveqd.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Ref | Expression |
|---|---|
| cnveqd | ⊢ (𝜑 → ◡𝐴 = ◡𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnveqd.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | cnveq 4954 | . 2 ⊢ (𝐴 = 𝐵 → ◡𝐴 = ◡𝐵) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → ◡𝐴 = ◡𝐵) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = 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: cnvsng 5273 cores2 5300 f1o3d 6298 suppssof1 6320 2ndval2 6390 2nd1st 6414 cnvf1olem 6460 brtpos2 6522 dftpos4 6534 tpostpos 6535 tposf12 6540 xpcomco 7124 infeq123d 7356 fsumcnv 12204 fprodcnv 12392 ennnfonelemf1 13309 strslfv3 13398 grpinvcnv 13873 grplactcnv 13907 eqglact 14028 xpsval 14201 isunitd 14413 znval 14971 znle2 14987 txswaphmeolem 15421 |
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