List questions from ring-theory

Published on 09 Apr 2026 - 22:14

118

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Sub Rings of the Real Field $\mathbb{R}$

Published on 14 Apr 2026 - 22:47

313

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The definition of the Frobenius automorphism, as given by Neukirch

Published on 11 Apr 2026 - 23:43

79

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is characteristics of integral domain ring also always a element of ring?

Published on 26 Mar 2026 - 6:21

42

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$I,J$ left minimal ideals of a ring with $1\neq 0$ then $IJ=0$ or $IJ\cong J$ as left $R$-modules

Published on 16 Apr 2026 - 20:21

88

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Epimorphism from $\mathbb{Z}[i]$ to $\mathbb{F}_{p}$ where $p\equiv1 \pmod 4$

Published on 16 Apr 2026 - 10:24

85

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Concerning $\langle p,q \rangle \subseteq k[p,q]$

Published on 11 May 2026 - 0:22

55

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When is $n\mathbb{Z}_{mn}$ a summand of $\mathbb{Z}_{mn}$?

Published on 27 Mar 2026 - 19:33

100

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Is $f$ an isomorphism?

Published on 09 Apr 2026 - 13:10

218

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Proof-Check : Let $R$ be a finite commutative ring with unity. Prove that every nonzero element of $R$ is either a unit or a zero-divisor.

Published on 14 Apr 2026 - 9:19

205

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Why is left ideal called right?

Published on 14 Apr 2026 - 10:21

196

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Ring homomorphism between fields of rational functions in many indeterminates

Published on 15 Apr 2026 - 16:51

104

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The notion of a domain

Published on 26 Mar 2026 - 6:12

151

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Quotients of polynomial rings by way of evaluation $R[x]/(x-a,f(x),g(x)\ldots) \cong R/(f(a),g(a),\ldots)$

Published on 16 Apr 2026 - 20:04

56

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Help verifying proof that for any commutative ring $R$ and $j \in R$, the subset $jR$ is an Ideal

Published on 14 Apr 2026 - 20:35

List Question

Direct Product of a Clean Rings

Sub Rings of the Real Field $\mathbb{R}$

The definition of the Frobenius automorphism, as given by Neukirch

is characteristics of integral domain ring also always a element of ring?

$I,J$ left minimal ideals of a ring with $1\neq 0$ then $IJ=0$ or $IJ\cong J$ as left $R$-modules

Epimorphism from $\mathbb{Z}[i]$ to $\mathbb{F}_{p}$ where $p\equiv1 \pmod 4$

Concerning $\langle p,q \rangle \subseteq k[p,q]$

When is $n\mathbb{Z}_{mn}$ a summand of $\mathbb{Z}_{mn}$?

Is $f$ an isomorphism?

Proof-Check : Let $R$ be a finite commutative ring with unity. Prove that every nonzero element of $R$ is either a unit or a zero-divisor.

Why is left ideal called right?

Ring homomorphism between fields of rational functions in many indeterminates

The notion of a domain

Quotients of polynomial rings by way of evaluation $R[x]/(x-a,f(x),g(x)\ldots) \cong R/(f(a),g(a),\ldots)$

Help verifying proof that for any commutative ring $R$ and $j \in R$, the subset $jR$ is an Ideal

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