Leonid Positselski

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Name Leonid Positselski
Member for 2 years
Seen 1 hour ago
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Location Moscow, Russia
Age 39
I am doing Homological Algebra, with occasional links to Representation Theory, Algebraic Geometry, Algebraic Number Theory, or Algebraic K-theory.
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Homotopy flat DG-modules

sep 26 10 at 23:29 Leonid Positselski 6,016●1●12●34

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Exact sequences of permutational representations?

dec 13 09 at 14:44 Leonid Positselski 6,016●1●12●34

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Etale cohomology of regular local rings

nov 3 10 at 14:02 Leonid Positselski 6,016●1●12●34

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Answers
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40
How Much Work Does it Take to be a Successful Mathematician?
36
Is “semisimple” a dense condition among Lie algebras?
30
What is Koszul duality?
24
Does the derived category remember the homological dimension?
21
Are the inner automorphisms the only ones that extend to every overgroup?
21
Non-commutative algebraic geometry
17
Is there an additive functor between abelian categories which isn’t exact in the middle?
16
The composition of derived functors - commutation fails hazardly?
15
Why does the Gamma-function complete the Riemann Zeta function?
14
Existence of projective resolutions in abelian categories
13
Tensored Over Abelian Groups?
13
Algebraic geometry for cocommutative corings with counit.
13
Can skeleta simplify category theory?
13
Geometric interpretation of filtered rings and modules
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Comodule exercises desired
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koszul duality and algebras over operads
10
Famous exercise from Lang’s Algebra
10
Does homology detect chain homotopy equivalence?
9
Telling group algebras apart
9
$\mathcal{D}$-quasi-isomorphisms and coherent $\Omega$-modules
9
Bimodules over division rings
8
Constructing a ring from an abelian group in a minimal way
8
Homotopic morphisms between curved A-infinity algebras
8
Tot and colimits
8
Koszul duality and modules over the Chevalley complex
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How is this observation related to Koszul duality?
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What formal properties should resolution of singularities have?
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Is every balanced pre-abelian category abelian?
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Apocryphal Maschke theorem?
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Derived Functors in arbitrary triangulated categories
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