4 papers
Counting Twisted Tame Fourier-Mukai Partners of an Ordinary K3 Surface
Tanya Kaushal Srivastava, Sofia Tirabassi
In this article, we prove that a tame twisted K3 surface over an algebraically closed field of positive characteristic has only finitely many tame twisted Fourier-Mukai partners an…
Pathologies of Hilbert scheme of points of supersingular Enriques surface
Tanya Kaushal Srivastava
We show that Hilbert schemes of points on supersingular Enriques surface in characteristic 2 are simply connected, symplectic varieties but are not irreducible symplectic as the ho…
Lifting Automorphisms on Abelian Varieties as Derived Autoequivalences
Tanya Kaushal Srivastava
We show that on an Abelian variety over an algebraically closed field of positive characteristic, the obstruction to lifting an automorphism to an Abelian variety over a field of c…
On Derived Equivalences of K3 Surfaces in Positive Characteristic
Tanya Kaushal Srivastava
For an ordinary K3 surface over an algebraically closed field of positive characteristic we show that every automorphism lifts to characteristic zero. Moreover, we show that the Fo…