evgeny's user avatar
evgeny's user avatar
evgeny's user avatar
evgeny
  • Member for 10 years, 3 months
  • Last seen more than 4 years ago
4 votes
0 answers
347 views

How should one understand shifted Lie algebras, like $T_X[-1]$?

7 votes
0 answers
221 views

Phantom category with trivial Hochschild cohomology

3 votes
0 answers
292 views

Resolving structure sheaf of diagonal via universal bundle on moduli space

15 votes
4 answers
1k views

Application of toric varieties for problems that do not mention them

5 votes
0 answers
143 views

Geometrical meaning of Atiyah-Bredon exact sequence in equivariant cohomology

10 votes
1 answer
419 views

Is this sequence of Lie algebra cohomology a part of spectral sequence?

2 votes
0 answers
84 views

If Lie algebra cohomology $H^2(g, M)=Ext^2_{U(g)}(k, M)$ classify $M$-extensions of $g$, are they $Ext^1_?(g, M)$ for some category?

8 votes
0 answers
487 views

Is a quotient of a solvable group always affine?

5 votes
1 answer
356 views

Normal form of elliptic curves via symmetric polynomials

4 votes
1 answer
605 views

Moment map for complete flags variety

13 votes
3 answers
682 views

Ring of invariants of $\operatorname{SL}_6$ acting on $\Lambda^3 \mathbb C^6$

6 votes
1 answer
469 views

Do topological spaces form a full subcategory of spectra?

5 votes
3 answers
530 views

Reference request: correspondence between central simple algebras and quadratic forms

6 votes
2 answers
558 views

Is there an analogue of CW-complexes built from $K(\mathbb Z, n)$ instead of $S^n$?

8 votes
0 answers
675 views

How to calculate the top Chern class of a "functorial" vector bundle on a moduli space of sheaves?

26 votes
1 answer
1k views

Why there is a Quot-scheme, not a Sub-scheme?

6 votes
2 answers
612 views

Reference request: an example of Bott residue formula's usage

9 votes
1 answer
1k views

Reference request: tangent space to moduli space of coherent sheaves is $\operatorname{Ext}^1(E, E)$

13 votes
0 answers
282 views

Actions of $\mathbb Z/2\mathbb Z$ on algebraically closed fields and even-dimensional spheres and parallel between Galois theory and covering theory

18 votes
1 answer
3k views

Why is Mumford's GIT-quotient so effective?

5 votes
1 answer
299 views

Supposed generalization of $X/(G \times H)\simeq (X/G)/H$ for GIT-quotients

4 votes
1 answer
590 views

Vector bundles on quotient variety