bio | website | |
---|---|---|
location | Moscow | |
age | 25 | |
visits | member for | 4 years, 9 months |
seen | yesterday | |
stats | profile views | 1,279 |
Aug
5 |
comment |
Why would we a priori expect $V(I)$ to satisfy axioms to define the closed sets for a topology on $\text{Proj}(S)$?
Can you answer your own question for $Spec(A)$? |
Aug
4 |
comment |
Three and a half basic questions on the Weil restriction of scalars
@grghxy thank you for pointing that out |
Aug
4 |
revised |
Three and a half basic questions on the Weil restriction of scalars
added 91 characters in body |
Aug
4 |
answered | Three and a half basic questions on the Weil restriction of scalars |
Jul
30 |
comment |
Supplementary notes to Mumford's The Red Book of Varieties and Schemes
Vakil is great, but definitely need presence of motivation. |
May
13 |
comment |
Canonical (tautological) section of a family of sheaves
I actually quite enjoy your perspective. |
May
12 |
answered | Canonical (tautological) section of a family of sheaves |
Jan
22 |
comment |
What is a Beilinson spectral sequence?
The general case is nicely stated in Christian Boening's paper mathematik.uni-bielefeld.de/documenta/vol-11/11.pdf |
Jan
17 |
awarded | Enlightened |
Jan
17 |
awarded | Nice Answer |
Jan
16 |
comment |
Why do we need localization by Leftschetz motive?
I should point out that Borisov's counterexample does not prove Galkin-Shinder wrong. Actually, they need something less strong. |
Jan
13 |
comment |
Moving a divisor on a (reducible, non-reduced) curve
This is really neat! |
Dec
25 |
comment |
Triangulated category of singularities of quotient
The right term is "triangulated category of singularities" |
Dec
24 |
comment |
Blow-ups of $\mathbb{P}^{n-3}$ and $(\mathbb{P}^1)^{n-3}$
I like the trick with moving "extra" points, but it would still be nice to have a purely geometric construction. |
Dec
18 |
answered | On understanding Orlov's LG B model |
Dec
8 |
comment |
Properties of finite quotients of quasi-projective varieties
@Sasha Isn't $X/G$ always the categorical quotient in the quasi-projective case? |
Nov
30 |
comment |
Cartier divisor on a double cover
@LiYutong If you double this line, it's by no means equivalent to $\pi^*D$. |
Nov
21 |
answered | Hartshorne Proposition III 8.1 |
Nov
18 |
awarded | Yearling |
Oct
8 |
comment |
Soft question: beginners reference to moduli spaces
The book is indeed a brother of "Methods of Homological Algebra: Vol. II". Well, we still have drafts and, say, Behrend's lectures mentioned by Piotr. |