List questions from noncommutative-algebra

Published on 13 Apr 2026 - 3:39

52

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How to prove that $Nil_M_n(R) = M_n(Nil_R)$?

Published on 16 Apr 2026 - 15:43

1k

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$x^n = x$ implies commutativity, a universal algebraic proof?

Published on 10 May 2026 - 12:32

129

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Equivalent formulations of the Köthe’s Conjecture

Published on 14 Apr 2026 - 20:48

105

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A characterization of left ideals in the ring of n×n matrices over a division ring

Published on 14 Apr 2026 - 16:41

994

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The radical and socle series of a module and its dual

Published on 09 Apr 2026 - 6:20

244

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Counting Group of order n

Published on 11 Apr 2026 - 8:11

70

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Fractional ideals of maximal orders in quaternion algebras

Published on 11 Apr 2026 - 3:15

171

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Complement of a projective two sided ideal is two sided again?

Published on 12 Apr 2026 - 7:21

104

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Computing the inverse of a full lattice in a quaternion algebra

Published on 23 Apr 2026 - 0:05

148

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How to show that an ideal I of a ring R is semiprimitive if and only if I is an intersection of primitive ideals

Published on 14 Apr 2026 - 10:34

287

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Solving linear systems for integer values in MAGMA

Published on 20 Apr 2026 - 15:20

44

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Field where $e^2 + f^2 = -1$ implies existance of matrix $A$ with $A^2 = -E_2$?

Published on 14 Apr 2026 - 11:58

813

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Maximal ideals in a group ring when the ring is a field

Published on 13 Apr 2026 - 18:41

770

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group-like elements of a Hopf algebra and the group algebra

Published on 14 Apr 2026 - 16:31

List Question

Loewy series of modules

How to prove that $Nil_M_n(R) = M_n(Nil_R)$?

$x^n = x$ implies commutativity, a universal algebraic proof?

Equivalent formulations of the Köthe’s Conjecture

A characterization of left ideals in the ring of n×n matrices over a division ring

The radical and socle series of a module and its dual

Counting Group of order n

Fractional ideals of maximal orders in quaternion algebras

Complement of a projective two sided ideal is two sided again?

Computing the inverse of a full lattice in a quaternion algebra

How to show that an ideal I of a ring R is semiprimitive if and only if I is an intersection of primitive ideals

Solving linear systems for integer values in MAGMA

Field where $e^2 + f^2 = -1$ implies existance of matrix $A$ with $A^2 = -E_2$?

Maximal ideals in a group ring when the ring is a field

group-like elements of a Hopf algebra and the group algebra

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