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Added the ring quotient of the image of an arbitrary function.#1238

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mortberg merged 2 commits intoagda:masterfrom
Freek98:CommRingImageQuotients
Aug 4, 2025
Merged

Added the ring quotient of the image of an arbitrary function.#1238
mortberg merged 2 commits intoagda:masterfrom
Freek98:CommRingImageQuotients

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@Freek98 Freek98 commented Jul 29, 2025

For $R$ a commutative ring, I have added the ideal generated by a function $f$, and the corresponding quotient ring $R/f$. I've also added a proof that if $g:R\to S$ sends the image of $f$ to $0$, this induces a unique map $R/f\to S$.

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Looks good to me, just one small comment to fix before this can be merged

@mortberg mortberg merged commit 8ef2c34 into agda:master Aug 4, 2025
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@Freek98 Freek98 mentioned this pull request Aug 4, 2025
@Freek98 Freek98 deleted the CommRingImageQuotients branch August 18, 2025 14:53
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3 participants