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Sasha
  • Member for 14 years, 4 months
  • Last seen more than 1 year ago
30 votes
7 answers
4k views

"Sums-compact" objects = f.g. objects in categories of modules?

19 votes
0 answers
865 views

Epsilon factors - a la Beilinson - What is it?

17 votes
4 answers
2k views

Are units of rings of functions on algebraic varieties finitely generated (mod. constants)?

14 votes
1 answer
786 views

Continued fractions and projective resolutions

13 votes
1 answer
942 views

Representing cohomology of a sheaf à la Eilenberg-Maclane

13 votes
0 answers
811 views

Duality in category O vs. Duality of D-modules

10 votes
0 answers
339 views

Simple question about DG-algebras

10 votes
2 answers
1k views

Connective spectra versus simplicial abelian groups - very basic question

10 votes
2 answers
2k views

The anticanonical bundle on a flag variety is ample

9 votes
1 answer
2k views

Symmetric polynomials theorem

9 votes
1 answer
529 views

derived categories as presentable DG-categories

9 votes
0 answers
1k views

Compact objects in triangulated and infinity categories

9 votes
2 answers
1k views

Hodge structure versus Weight structure

9 votes
0 answers
492 views

Naive question about classification of unipotent character sheaves

8 votes
2 answers
737 views

Proving that some principal series representations of SL(2,F) are irreducible

8 votes
0 answers
269 views

Practice of higher categories - giving rigorous constructions

8 votes
3 answers
845 views

Any cocomplete category with a dense small full subcategory is complete?

8 votes
3 answers
3k views

Quotient of flat module is flat - a property in Mumford's Red book

8 votes
1 answer
966 views

Proper morphism sending coherent to coherent

8 votes
2 answers
1k views

The composition of derived functors - commutation fails hazardly?

7 votes
1 answer
905 views

Classifying spaces of E_1 - spaces

7 votes
2 answers
1k views

Reference request - CDGA vs. sAlg in char. 0

7 votes
1 answer
390 views

Distinguished triangle of closed - open partition, for D-modules

7 votes
1 answer
1k views

Elementary question about Langlands decomposition

7 votes
1 answer
1k views

Intuition - difference between Moore spectrum and Eilenberg-Mac Lane spectrum

6 votes
1 answer
349 views

"Descent" of analytic functions along a finite morphism

6 votes
2 answers
1k views

First Galois cohomology of Weil restriction of $\mathbb{G}_m$

6 votes
1 answer
295 views

Stable vector bundles in Weil's parametrization

6 votes
1 answer
882 views

Embedding of a scheme into a regular scheme

6 votes
1 answer
1k views

Transporting model structures via adjunctions