Question

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

score 378 · Answer 1 · 2026-05-02 04:57:17

378

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

Published on 02 May 2026 - 4:57

score 524 · Answer 2 · 2026-04-15 00:29:04

524

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

Published on 15 Apr 2026 - 0:29

score 905 · Answer 3 · 2026-04-11 04:21:16

905

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Radical Ideal in the Coordinate Ring is Intersection of Maximal Ideals

Published on 11 Apr 2026 - 4:21

score 132 · Answer 4 · 2026-04-13 20:32:30

132

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

Published on 13 Apr 2026 - 20:32

score 56 · Answer 5 · 2026-04-12 22:42:33

56

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

Published on 12 Apr 2026 - 22:42

score 41 · Answer 6 · 2026-04-29 12:21:50

41

Views

How to get an isomorphic ideal from a given one?

Published on 29 Apr 2026 - 12:21

score 836 · Answer 7 · 2026-05-10 12:42:51

836

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 10 May 2026 - 12:42

score 148 · Answer 8 · 2026-04-09 01:07:22

148

Views

Proof of Maximal Ideals are prime ideals

Published on 09 Apr 2026 - 1:07

score 302 · Answer 9 · 2026-05-10 13:48:14

302

Views

An exercise for a subring with finite index.

Published on 10 May 2026 - 13:48

score 347 · Answer 10 · 2026-04-09 17:55:01

347

Views

Contraction of principal ideals does not need to be principal

Published on 09 Apr 2026 - 17:55

score 91 · Answer 11 · 2026-04-11 20:34:44

91

Views

Quotient of Gaussian Integers via Third Ring Isomorphism

Published on 11 Apr 2026 - 20:34

score 709 · Answer 12 · 2026-05-10 13:50:04

709

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

Published on 10 May 2026 - 13:50

score 1.3k · Answer 13 · 2026-04-14 13:25:10

1.3k

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

Published on 14 Apr 2026 - 13:25

score 217 · Answer 14 · 2026-04-15 21:00:59

217

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

Published on 15 Apr 2026 - 21:00

score 67 · Answer 15 · 2026-04-15 12:54:47

67

Views

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

Published on 15 Apr 2026 - 12:54

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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