Greg Marks

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Name	Greg Marks
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function that sums to zero over cube vertices

puzzle elementary

nov 27 10 at 1:36 Gjergji Zaimi 37.4k●2●72●149

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Rings in which every non-unit is a zero divisor

Direct sum of injective modules over non-Noetherian rings

When and how is it appropriate for an undergraduate to email a professor out of the blue?

Refereeing a Paper

Teaching proofs in the era of Google

How to introduce notions of flat, projective and free modules?

Isomorphism between direct sum of modules

Finite number of minimal ideals (2)

Mathematical “urban legends”

When is a topological group Hausdorff (separated)?

Group ring and left zero divisor.

Why is it a good idea to study a ring by studying its modules?

Terminology: Algebras where long strings of products are 0?

Fundamental groups of topological groups.

term for a “faithful” module

Examples of badly behaved derivatives

Demonstrating that rigour is important

What are the reasons for considering rings without identity?

elementary classification of artinian rings

Cool problems to impress students with group theory

Interesting applications (in pure mathematics) of first-year calculus

endomorphism ring of a finite-length module

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