List questions from ring-theory

Published on 20 Mar 2026 - 3:55

1k

Views

How many units in ring $\mathbb{Z}_{2^n}$?

Published on 22 Mar 2026 - 16:50

130

Views

How do I translate functions on the Prufer 2-group between functions on the $2^n$ roots of unity and the dyadic fractions modulo 1?

Published on 23 Mar 2026 - 19:31

228

Views

Why does the product in a group ring have finite support?

Published on 22 Mar 2026 - 18:04

263

Views

Embedding from Rational Numbers to Ordered Field is Order Preserving

Published on 20 Mar 2026 - 11:42

78

Views

Extension and restriction of involutions

Published on 22 Mar 2026 - 21:50

403

Views

Every locally closed irreducible subset $Z$ of $X:=\text{Spec}A$ contains a unique generic point.

Published on 18 Jan 2018 - 21:47

373

Views

How many elements does the quotient ring have?

Published on 22 Mar 2026 - 14:17

436

Views

Can a ring have multiple zero elements?

Published on 22 Mar 2026 - 4:33

2.9k

Views

$\mathbb{Z}[i] / (2+3i)$ has 13 elements

Published on 17 Mar 2026 - 16:19

99

Views

Does a ring homomorphism necessarily induce a map of their spectrums?

Published on 19 Jan 2018 - 5:56

1.3k

Views

Prove that the only ring homomorphism is the trivial one

Published on 19 Jan 2018 - 8:09

232

Views

Exercise on conditions for a ring to be normal

Published on 20 Mar 2026 - 4:59

821

Views

All maximal subfields of a Division Algebra are isomorphic.

Published on 22 Mar 2026 - 7:47

87

Views

Integrality and ring morphisms $f:R\to S$

Published on 23 Mar 2026 - 8:25

List Question

Primary decomposition in a finite algebra

How many units in ring $\mathbb{Z}_{2^n}$?

How do I translate functions on the Prufer 2-group between functions on the $2^n$ roots of unity and the dyadic fractions modulo 1?

Why does the product in a group ring have finite support?

Embedding from Rational Numbers to Ordered Field is Order Preserving

Extension and restriction of involutions

Every locally closed irreducible subset $Z$ of $X:=\text{Spec}A$ contains a unique generic point.

How many elements does the quotient ring have?

Can a ring have multiple zero elements?

$\mathbb{Z}[i] / (2+3i)$ has 13 elements

Does a ring homomorphism necessarily induce a map of their spectrums?

Prove that the only ring homomorphism is the trivial one

Exercise on conditions for a ring to be normal

All maximal subfields of a Division Algebra are isomorphic.

Integrality and ring morphisms $f:R\to S$

Trending Questions

Popular # Hahtags

Popular Questions