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| Mirrors > Home > ILE Home > Th. List > imaeq2d | GIF version | ||
| Description: Equality theorem for image. (Contributed by FL, 15-Dec-2006.) |
| Ref | Expression |
|---|---|
| imaeq1d.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Ref | Expression |
|---|---|
| imaeq2d | ⊢ (𝜑 → (𝐶 “ 𝐴) = (𝐶 “ 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | imaeq1d.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | imaeq2 5122 | . 2 ⊢ (𝐴 = 𝐵 → (𝐶 “ 𝐴) = (𝐶 “ 𝐵)) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → (𝐶 “ 𝐴) = (𝐶 “ 𝐵)) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 “ cima 4777 |
| 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-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-sn 3715 df-pr 3716 df-op 3718 df-br 4131 df-opab 4193 df-xp 4780 df-cnv 4782 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 |
| This theorem is used by: imaeq12d 5127 nfimad 5135 elimasng 5155 ressn 5328 foima 5620 f1imacnv 5656 fvco2 5774 fsn2 5882 fncofn 5893 resfunexg 5936 funfvima3 5952 funiunfvdm 5969 isoselem 6026 fnexALT 6340 suppsnopdc 6490 suppcofn 6506 imacosuppfn 6508 eceq1 6842 uniqs2 6869 ecinxp 6884 mapsnd 6970 mapsn 6972 en2 7112 phplem4 7156 phplem4dom 7163 phplem4on 7169 sbthlem2 7275 isbth 7284 resunimafz0 11274 ballotfilemscr 13262 ennnfonelemg 13294 ennnfonelemhf1o 13304 ennnfonelemex 13305 ennnfonelemrn 13310 cnntr 15326 cnptopresti 15339 cnptoprest 15340 eupth2lem3fi 16717 eupth2fi 16720 |
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