user91132

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people.maths.ox.ac.uk/ardakov
Oxford

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29

When is $\ker AB = \ker A + \ker B$?

Nov 5, 2011

21

How to memorise (understand) Nakayama's lemma and its corollaries?

Apr 13, 2011

17

Explicit ring of differential operators for polynomial algebras over the integers?

Feb 28, 2011

13

Annihilators in Matrix Rings

Jul 13, 2012

13

Non-commutative reduced rings of order $p^2$

Sep 9, 2013

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Tensor products of Weyl modules in positive characteristic

Jun 15, 2010

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ac.commutative-algebra

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ra.rings-and-algebras

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noncommutative-algebra

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rt.representation-theory

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lie-algebras

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+10

When is a restricted enveloping algebra a domain? A finitely generated domain?

+10

non commutative polynomial which is zero for all matrix evaluation

+10

ad-nilpotent degree of a nilpotent Lie Algebra

+10

When is $\ker AB = \ker A + \ker B$?

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