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Answers
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4
When is a topological group Hausdorff (separated)?
3
Why is it a good idea to study a ring by studying its modules?
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Group ring and left zero divisor.
2
What are the reasons for considering rings without identity?
11
Direct sum of injective modules over non-Noetherian rings
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Mathematical “urban legends”
2
Cool problems to impress students with group theory
4
Teaching proofs in the era of Google
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term for a “faithful” module
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How to introduce notions of flat, projective and free modules?
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Fundamental groups of topological groups.
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Rings in which every non-unit is a zero divisor
2
Demonstrating that rigour is important
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Refereeing a Paper
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Interesting applications (in pure mathematics) of first-year calculus
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endomorphism ring of a finite-length module
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Examples of badly behaved derivatives
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When and how is it appropriate for an undergraduate to email a professor out of the blue?
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Terminology: Algebras where long strings of products are 0?
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Isomorphism between direct sum of modules
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Finite number of minimal ideals (2)
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elementary classification of artinian rings