List questions from ring-homomorphism

Published on 28 Mar 2021 - 18:35

294

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Proof of Commutativity of the ring of endomorphisms over integers

Published on 12 Apr 2021 - 11:56

46

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Inclusion of ideal in a finite union of ideals

Published on 14 Apr 2021 - 11:23

112

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Ring Homomorphism Question

Published on 15 Apr 2021 - 6:19

50

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When does a monomorphism must be an automorphism?

Published on 25 Mar 2026 - 17:36

32

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Does every evaluation map $g: \Bbb{Z}[X,Y]/(\ker \pi) \to \Bbb{Z}$ factor some evaluation map $f:\Bbb{Z}[X,Y] \to \Bbb{Z}$?

Published on 21 Apr 2021 - 1:26

148

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Why does field theory still work with generalized field extensions (embeddings)?

Published on 26 Apr 2021 - 20:54

38

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No onto map between the algebras.

Published on 26 Mar 2026 - 21:08

280

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Are $\mathbb{Q}(π)$ and $\mathbb{Q}(π^2)$ the same field?

Published on 05 May 2021 - 7:38

54

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Determine the ring homomorphism with domain $\mathbb{Q}?$

Published on 05 May 2021 - 8:36

125

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Quotients of multivariate polynomial rings - is $k[x][y]/(y-x^2) \cong k[y][x]/(y-x^2)$?

Published on 07 May 2021 - 16:35

144

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Show there exists an injective ring homomorphism that makes the diagram commute.

Published on 17 May 2021 - 17:37

68

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Does an $R$ algebra always contain $R$?

Published on 27 Mar 2026 - 8:41

307

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Is the map $R^\text{op} \to \text{End}_R(M)$ defined by $a \mapsto (x \mapsto ax)$ valid?

Published on 22 May 2021 - 8:28

106

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Localization of a ring isomorphism and algebras

Published on 22 May 2021 - 21:34

List Question

Ring endomorphism of $p$-adic integers

Proof of Commutativity of the ring of endomorphisms over integers

Inclusion of ideal in a finite union of ideals

Ring Homomorphism Question

When does a monomorphism must be an automorphism?

Does every evaluation map $g: \Bbb{Z}[X,Y]/(\ker \pi) \to \Bbb{Z}$ factor some evaluation map $f:\Bbb{Z}[X,Y] \to \Bbb{Z}$?

Why does field theory still work with generalized field extensions (embeddings)?

No onto map between the algebras.

Are $\mathbb{Q}(π)$ and $\mathbb{Q}(π^2)$ the same field?

Determine the ring homomorphism with domain $\mathbb{Q}?$

Quotients of multivariate polynomial rings - is $k[x][y]/(y-x^2) \cong k[y][x]/(y-x^2)$?

Show there exists an injective ring homomorphism that makes the diagram commute.

Does an $R$ algebra always contain $R$?

Is the map $R^\text{op} \to \text{End}_R(M)$ defined by $a \mapsto (x \mapsto ax)$ valid?

Localization of a ring isomorphism and algebras

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