List questions from quotient-spaces

Published on 24 Apr 2019 - 17:17

432

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Quotient algebras of nilpotent Lie algebra are nilpotent

Published on 25 Mar 2026 - 14:47

192

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Preimage of codimension one subspace of the quotient $g/D^1 g$

Published on 26 Apr 2019 - 16:07

1k

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If $X$ is normal and $A \subset X$ is closed, then the quotient space $X/A$ is normal.

Published on 26 Apr 2019 - 19:54

50

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Behavior of points and compact subsets of Hausdorff spaces

Published on 25 Mar 2026 - 9:53

101

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Let $X$ a non-Hausdorff topological space and let $\sim$ denote an equivalence relation on $X$. Is it possible that $X/\sim$ be Hausdorff?

Published on 29 Apr 2019 - 0:04

31

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Understanding a specific quotient ring

Published on 03 May 2019 - 5:14

115

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Quotient of semi-simple representation is semi-simple

Published on 03 May 2019 - 22:44

407

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Proof about length of quotient modules

Published on 12 May 2019 - 21:34

61

Views

Polynomial factorization in $\mathbb{R}$ and $\mathbb{Z}_{[n]}$

Published on 19 May 2019 - 10:33

131

Views

What is the quotient space $\mathbb{H}/PSL(2,\mathbb{Z})$?

Published on 20 May 2019 - 20:21

270

Views

Characterization of the Borel $\sigma$-algebra on a topological quotient space

Published on 25 Mar 2026 - 17:19

488

Views

Proof that a quotient metric space is complete

Published on 25 May 2019 - 15:40

2.7k

Views

Grassmannian as a quotient of orthogonal or general linear group

Published on 25 Mar 2026 - 9:27

127

Views

minimal polynomial of multiplication endomorphism in polynomial vector space

Published on 05 Jun 2019 - 23:59

List Question

Real projective space and $n$-sphere

Quotient algebras of nilpotent Lie algebra are nilpotent

Preimage of codimension one subspace of the quotient $g/D^1 g$

If $X$ is normal and $A \subset X$ is closed, then the quotient space $X/A$ is normal.

Behavior of points and compact subsets of Hausdorff spaces

Let $X$ a non-Hausdorff topological space and let $\sim$ denote an equivalence relation on $X$. Is it possible that $X/\sim$ be Hausdorff?

Understanding a specific quotient ring

Quotient of semi-simple representation is semi-simple

Proof about length of quotient modules

Polynomial factorization in $\mathbb{R}$ and $\mathbb{Z}_{[n]}$

What is the quotient space $\mathbb{H}/PSL(2,\mathbb{Z})$?

Characterization of the Borel $\sigma$-algebra on a topological quotient space

Proof that a quotient metric space is complete

Grassmannian as a quotient of orthogonal or general linear group

minimal polynomial of multiplication endomorphism in polynomial vector space

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