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Anton Fonarev
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Nov
18
awarded
Yearling
Oct
8
answered
Can one drop the locally free assumption in projection formula on a projective bundle?
Sep
28
answered
Can relative flatness of a sheaf be tested using (faithfully) flat morphisms?
Sep
8
comment
Reduction to some physical interpretation of this formula
@GerryMyerson Up to division by 2 and replacing some latin letters with greek analogues.
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?
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