List questions from quotient-spaces

Published on 02 Mar 2018 - 18:20

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How to show that $Y\cup_{f} X$ is normal when $X$ and $Y$ are normal and $f:A\to Y$ is a continuous map with $A$ closed in $X$?

Published on 03 Mar 2018 - 23:26

421

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Third homotopy group of quotient space

Published on 22 Mar 2026 - 14:56

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Is the cardinality of the polynomial quotient ring $\mathbb{Z}_n [x] /f(x)$ always finite?

Published on 22 Mar 2026 - 12:10

145

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Expressing Laurent polynomials using generators and relations

Published on 09 Mar 2018 - 4:09

468

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basic questions about group action on affine schemes

Published on 11 Mar 2018 - 6:22

221

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Quotient Space of $\mathbb{R} \times [0,1] $

Published on 11 Mar 2018 - 14:56

159

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Quotient group of $D(2,3,7)$ under the Klein Quartic

Published on 24 Mar 2026 - 22:09

629

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Quotient space and quotient map

Published on 16 Mar 2018 - 15:58

276

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Continuity of a function from a one-point compactification to a cone

Published on 16 Mar 2018 - 17:59

92

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About spaces $\Bbb R^n/\!\sim$ in which certain coordinate permutations do not matter.

Published on 17 Mar 2026 - 5:53

321

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Infinity norm quotient

Published on 19 Mar 2018 - 10:22

424

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Counting ring homomorphisms from $ \mathbb{Q}[X]/(X^{3}-1) \rightarrow \mathbb{C} $

Published on 20 Mar 2018 - 4:20

213

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Quotient space- two different descriptions?

Published on 15 Mar 2026 - 22:13

1.5k

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Why do we require quotient to be surjective?

Published on 28 Mar 2018 - 0:31

List Question

Notation in quotient rings

How to show that $Y\cup_{f} X$ is normal when $X$ and $Y$ are normal and $f:A\to Y$ is a continuous map with $A$ closed in $X$?

Third homotopy group of quotient space

Is the cardinality of the polynomial quotient ring $\mathbb{Z}_n [x] /f(x)$ always finite?

Expressing Laurent polynomials using generators and relations

basic questions about group action on affine schemes

Quotient Space of $\mathbb{R} \times [0,1] $

Quotient group of $D(2,3,7)$ under the Klein Quartic

Quotient space and quotient map

Continuity of a function from a one-point compactification to a cone

About spaces $\Bbb R^n/\!\sim$ in which certain coordinate permutations do not matter.

Infinity norm quotient

Counting ring homomorphisms from $ \mathbb{Q}[X]/(X^{3}-1) \rightarrow \mathbb{C} $

Quotient space- two different descriptions?

Why do we require quotient to be surjective?

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