List questions from commutative-algebra

Published on 25 Mar 2026 - 9:38

615

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Wedge product of alternating forms is again alternating – Definition with shufles

Published on 11 Apr 2026 - 17:01

41

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Question about degree of a Hilbert polynomial.

Published on 10 Apr 2026 - 18:09

78

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Do we have $M\otimes_A(I_1/I_2)\cong I_1M/I_2M$?

Published on 13 Apr 2026 - 20:44

87

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Concerning an ideal invariant under an involution

Published on 25 Mar 2026 - 9:22

77

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$S^{−1} I = 0$ if and only if there exists an $s ∈ S$ such that $s I = 0$

Published on 27 Mar 2026 - 17:04

61

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Writing down the graded pieces of $k[x_1,...,x_n]/(x_1^2,...,x_n^2) $ in terms of the irrelevant maximal ideal

Published on 25 Mar 2026 - 9:30

75

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How to show $\bigcap_{n=0}^\infty I^n=0$?

Published on 11 Apr 2026 - 18:44

75

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Primary decomposition for an ideal

Published on 01 Apr 2026 - 10:38

41

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How to check if a subset is open in Zariski

Published on 17 Apr 2026 - 10:49

253

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A local Cohen-Macaulay ring whose dimension is one less than the minimal no. of generators of its maximal ideal

Published on 02 May 2026 - 10:57

179

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If $M_m=0\forall m\in \operatorname{Specm}(A)$ s.t. $m\supset I$, then $M=IM$

Published on 27 Mar 2026 - 17:06

807

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How to compute a derived tensor product?

Published on 12 Apr 2026 - 18:26

79

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Show that $1\otimes i $ is injective.

Published on 26 Mar 2026 - 1:28

65

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If $E\cong F$ and $E\subset F$, can we say that $E=F$?

Published on 15 Apr 2026 - 0:28

List Question

Maximal Cohen-Macaulay of finite injective dimension

Wedge product of alternating forms is again alternating – Definition with shufles

Question about degree of a Hilbert polynomial.

Do we have $M\otimes_A(I_1/I_2)\cong I_1M/I_2M$?

Concerning an ideal invariant under an involution

$S^{−1} I = 0$ if and only if there exists an $s ∈ S$ such that $s I = 0$

Writing down the graded pieces of $k[x_1,...,x_n]/(x_1^2,...,x_n^2) $ in terms of the irrelevant maximal ideal

How to show $\bigcap_{n=0}^\infty I^n=0$?

Primary decomposition for an ideal

How to check if a subset is open in Zariski

A local Cohen-Macaulay ring whose dimension is one less than the minimal no. of generators of its maximal ideal

If $M_m=0\forall m\in \operatorname{Specm}(A)$ s.t. $m\supset I$, then $M=IM$

How to compute a derived tensor product?

Show that $1\otimes i $ is injective.

If $E\cong F$ and $E\subset F$, can we say that $E=F$?

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