List questions from commutative-algebra

Published on 20 Mar 2026 - 16:35

76

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Completion and endmorphism ring of injective envelope

Published on 25 Mar 2026 - 1:21

73

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Intersection of a domain $R$ with an ideal $\mathfrak a$ of height $2$ in $R[X]$

Published on 20 Jun 2018 - 13:31

66

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A question about Jacobson ring

Published on 21 Jun 2018 - 15:26

112

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Rings with an epimorphism to $\mathbb{Z}_2$

Published on 30 Mar 2026 - 7:07

461

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Jacobian ideal of $f$ and normality

Published on 25 Mar 2026 - 13:55

969

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Ideal generated by linear polynomials is radical?

Published on 28 Mar 2026 - 23:57

373

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If $M$ is a flat $R$-module and $rm=0$ for some $r$ and $m$, show $m=0$.

Published on 23 Mar 2026 - 4:53

446

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Ring homomorphism between commutative rings whose kernel has only nilpotent elements

Published on 25 Mar 2026 - 21:44

483

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Isomorphism of group rings over finite cyclic groups

Published on 25 Mar 2026 - 6:40

228

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Intersection of all positive powers of a prime ideal in integral domain with all ideals of finite height

Published on 25 Mar 2026 - 21:51

345

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A characterization for idempotent lifting property

Published on 25 Mar 2026 - 15:38

59

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maps out of the ring $\prod \mathbb{Z}$ related to connected components of $ \operatorname{Spec}$

Published on 24 Jun 2018 - 15:51

119

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$\mathrm{Ext}^1$ of ideal in $k[[x,y]]$

Published on 29 Mar 2026 - 4:47

63

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Special representatives for elements of a quotient ring

Published on 28 Mar 2026 - 22:26

List Question

Example of Gorenstein ring that has infinite Krull dimension?

Completion and endmorphism ring of injective envelope

Intersection of a domain $R$ with an ideal $\mathfrak a$ of height $2$ in $R[X]$

A question about Jacobson ring

Rings with an epimorphism to $\mathbb{Z}_2$

Jacobian ideal of $f$ and normality

Ideal generated by linear polynomials is radical?

If $M$ is a flat $R$-module and $rm=0$ for some $r$ and $m$, show $m=0$.

Ring homomorphism between commutative rings whose kernel has only nilpotent elements

Isomorphism of group rings over finite cyclic groups

Intersection of all positive powers of a prime ideal in integral domain with all ideals of finite height

A characterization for idempotent lifting property

maps out of the ring $\prod \mathbb{Z}$ related to connected components of $ \operatorname{Spec}$

$\mathrm{Ext}^1$ of ideal in $k[[x,y]]$

Special representatives for elements of a quotient ring

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