Question

What is the set {$e\in(R/ I)\times(R/J): e$ is idempotent}

score 369 · Answer 1 · 2026-03-25 03:07:13

369

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What is the set {$e\in(R/ I)\times(R/J): e$ is idempotent}

Published on 25 Mar 2026 - 3:07

score 521 · Answer 2 · 2018-02-20 16:30:46

521

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Find a generators for the following ideal in R[X]

Published on 20 Feb 2018 - 16:30

score 902 · Answer 3 · 2018-02-21 03:16:15

902

Views

Radical Ideal in the Coordinate Ring is Intersection of Maximal Ideals

Published on 21 Feb 2018 - 3:16

score 130 · Answer 4 · 2018-02-21 20:28:12

130

Views

Define $φ:\mathbb{C}[x,y]\to\mathbb{C}[x]\times\mathbb{C}[y]\times\mathbb{C}[t]$

Published on 21 Feb 2018 - 20:28

score 53 · Answer 5 · 2018-02-22 14:58:34

53

Views

What is the norm and how do you calculate it in this case?

Published on 22 Feb 2018 - 14:58

score 36 · Answer 6 · 2026-03-20 12:56:51

36

Views

How to get an isomorphic ideal from a given one?

Published on 20 Mar 2026 - 12:56

score 832 · Answer 7 · 2018-02-22 23:09:57

832

Views

Show that $(n,x)$ is a prime ideal if and only if $n$ is a prime number $(R = \mathbb{Z}[x],n\geq 1$)

Published on 22 Feb 2018 - 23:09

score 145 · Answer 8 · 2018-02-24 04:23:58

145

Views

Proof of Maximal Ideals are prime ideals

Published on 24 Feb 2018 - 4:23

score 299 · Answer 9 · 2026-03-25 06:11:24

299

Views

An exercise for a subring with finite index.

Published on 25 Mar 2026 - 6:11

score 344 · Answer 10 · 2018-02-24 20:54:13

344

Views

Contraction of principal ideals does not need to be principal

Published on 24 Feb 2018 - 20:54

score 88 · Answer 11 · 2018-02-26 00:12:38

88

Views

Quotient of Gaussian Integers via Third Ring Isomorphism

Published on 26 Feb 2018 - 0:12

score 706 · Answer 12 · 2026-03-25 01:18:26

706

Views

Can ring homomorphisms be characterized as ring maps such that preimage of any ideal is an ideal?

Published on 25 Mar 2026 - 1:18

score 1.3k · Answer 13 · 2018-02-27 21:30:36

1.3k

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If $(a)$ and $(b)$ are principal ideals of $R$, when is $(a)(b) = (ab)$?

Published on 27 Feb 2018 - 21:30

score 215 · Answer 14 · 2026-03-24 23:45:12

215

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On permutation of regular sequence of length two in commutative Noetherian ring

Published on 24 Mar 2026 - 23:45

score 65 · Answer 15 · 2026-03-24 23:45:56

65

Views

A question on the permutation of regular sequence of length two in commutative Noetherian ring

Published on 24 Mar 2026 - 23:45

List Question

What is the set {$e\in(R/ I)\times(R/J): e$ is idempotent}

Find a generators for the following ideal in R[X]

Radical Ideal in the Coordinate Ring is Intersection of Maximal Ideals

Define $φ:\mathbb{C}[x,y]\to\mathbb{C}[x]\times\mathbb{C}[y]\times\mathbb{C}[t]$

What is the norm and how do you calculate it in this case?

How to get an isomorphic ideal from a given one?

Show that $(n,x)$ is a prime ideal if and only if $n$ is a prime number $(R = \mathbb{Z}[x],n\geq 1$)

Proof of Maximal Ideals are prime ideals

An exercise for a subring with finite index.

Contraction of principal ideals does not need to be principal

Quotient of Gaussian Integers via Third Ring Isomorphism

Can ring homomorphisms be characterized as ring maps such that preimage of any ideal is an ideal?

If $(a)$ and $(b)$ are principal ideals of $R$, when is $(a)(b) = (ab)$?

On permutation of regular sequence of length two in commutative Noetherian ring

A question on the permutation of regular sequence of length two in commutative Noetherian ring

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