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Mirrors > Home > ILE Home > Th. List > imaeq1i | GIF version |
Description: Equality theorem for image. (Contributed by NM, 21-Dec-2008.) |
Ref | Expression |
---|---|
imaeq1i.1 | ⊢ 𝐴 = 𝐵 |
Ref | Expression |
---|---|
imaeq1i | ⊢ (𝐴 “ 𝐶) = (𝐵 “ 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | imaeq1i.1 | . 2 ⊢ 𝐴 = 𝐵 | |
2 | imaeq1 4812 | . 2 ⊢ (𝐴 = 𝐵 → (𝐴 “ 𝐶) = (𝐵 “ 𝐶)) | |
3 | 1, 2 | ax-mp 7 | 1 ⊢ (𝐴 “ 𝐶) = (𝐵 “ 𝐶) |
Colors of variables: wff set class |
Syntax hints: = wceq 1299 “ cima 4480 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 671 ax-5 1391 ax-7 1392 ax-gen 1393 ax-ie1 1437 ax-ie2 1438 ax-8 1450 ax-10 1451 ax-11 1452 ax-i12 1453 ax-bndl 1454 ax-4 1455 ax-17 1474 ax-i9 1478 ax-ial 1482 ax-i5r 1483 ax-ext 2082 |
This theorem depends on definitions: df-bi 116 df-3an 932 df-tru 1302 df-nf 1405 df-sb 1704 df-clab 2087 df-cleq 2093 df-clel 2096 df-nfc 2229 df-v 2643 df-un 3025 df-in 3027 df-ss 3034 df-sn 3480 df-pr 3481 df-op 3483 df-br 3876 df-opab 3930 df-cnv 4485 df-dm 4487 df-rn 4488 df-res 4489 df-ima 4490 |
This theorem is referenced by: mptpreima 4968 isarep2 5146 infrenegsupex 9239 infxrnegsupex 10871 ssidcn 12160 cnco 12171 |
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