Greg Stevenson

Member for 15 years, 2 months
Last seen this week

maths.gla.ac.uk/~gstevenson
Glasgow, United Kingdom

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81

How do I check if a functor has a (left/right) adjoint?

Nov 17, 2009

50

How do I know the derived category is NOT abelian?

Feb 18, 2010

49

Order of an automorphism of a finite group

Oct 18, 2009

28

What is the "right" definition of a ring?

Oct 27, 2009

27

Pushouts in the Category of Schemes

Nov 12, 2009

Questions

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Is there a constructive description of type in the p-local stable homotopy category?

Oct 25, 2009

8

Can any countably generated k-algebra occur as the ring of global sections of some variety?

Oct 26, 2009

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ct.category-theory

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ag.algebraic-geometry

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homological-algebra

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triangulated-categories

130

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derived-categories

125

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Nonprojective Surface

+10

How do I check if a functor has a (left/right) adjoint?

+10

distinguished triangles and cohomology

+10

How do I know the derived category is NOT abelian?

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