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Leonid Positselski's user avatar
Leonid Positselski's user avatar
Leonid Positselski's user avatar
Leonid Positselski
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I am doing Homological Algebra, with occasional links to Representation Theory, Algebraic Geometry, Algebraic Number Theory, or Algebraic K-theory.

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answer
82
How Much Work Does it Take to be a Successful Mathematician?
Dec 26, 2009
answer
65
What is Koszul duality?
Nov 27, 2009
answer
63
Is "semisimple" a dense condition among Lie algebras?
Dec 24, 2009
answer
60
Why does the Gamma-function complete the Riemann Zeta function?
Dec 3, 2009
answer
41
Name for abelian category in which every short exact sequence splits
Apr 13, 2019
answer
40
Are the inner automorphisms the only ones that extend to every overgroup?
Dec 4, 2009
answer
34
Does the derived category remember the homological dimension?
Mar 5, 2011
answer
29
Non-commutative algebraic geometry
Dec 5, 2009
answer
28
Is there an additive functor between abelian categories which isn't exact in the middle?
Nov 14, 2010
answer
28
Geometric interpretation of filtered rings and modules
May 25, 2010