Vafa–Witten invariants from exceptional collections

G Beaujard, J Manschot, B Pioline - Communications in Mathematical …, 2021 - Springer
Supersymmetric D-branes supported on the complex two-dimensional base S of the local
Calabi–Yau threefold KS are described by semi-stable coherent sheaves on S. Under …

[HTML][HTML] Silting theory in triangulated categories with coproducts

P Nicolás, M Saorín, A Zvonareva - Journal of Pure and Applied Algebra, 2019 - Elsevier
We introduce the notion of noncompact (partial) silting and (partial) tilting sets and objects in
any triangulated category D with arbitrary (set-indexed) coproducts. We show that …

Semiorthogonal decompositions and birational geometry of del Pezzo surfaces over arbitrary fields

A Auel, M Bernardara - Proceedings of the London …, 2018 - Wiley Online Library
We study the birational properties of geometrically rational surfaces from a derived
categorical perspective. In particular, we give a criterion for the rationality of a del Pezzo …

Derived categories of singular surfaces

J Karmazyn, A Kuznetsov, E Shinder - Journal of the European …, 2021 - ems.press
Derived categories of singular surfaces Page 1 © 2021 European Mathematical Society
Published by EMS Press. This work is licensed under a CC BY 4.0 licence. J. Eur. Math. Soc. 24 …

[PDF][PDF] Non-commutative crepant resolutions: scenes from categorical geometry

GJ Leuschke - Progress in commutative algebra, 2012 - library.oapen.org
Non-commutative crepant resolutions are algebraic objects defined by Van den Bergh to
realize an equivalence of derived categories in birational geometry. They are motivated by …

[HTML][HTML] Exceptional collections, and the Néron–Severi lattice for surfaces

C Vial - Advances in Mathematics, 2017 - Elsevier
We work out properties of smooth projective varieties X over a (not necessarily algebraically
closed) field k that admit collections of objects in the bounded derived category of coherent …

Maximal lengths of exceptional collections of line bundles

AI Efimov - Journal of the London Mathematical Society, 2014 - academic.oup.com
In this paper, we construct infinitely many examples of toric Fano varieties with Picard
number three, which do not admit full exceptional collections of line bundles. In particular …

Hochschild dimensions of tilting objects

M Ballard, D Favero - International Mathematics Research …, 2012 - ieeexplore.ieee.org
Hochschild Dimensions of Tilting Objects Page 1 M. Ballard and D. Favero (2012) “Hochschild
Dimensions of Tilting Objects,” International Mathematics Research Notices, Vol. 2012, No. 11 …

Tilting bundles on rational surfaces and quasi-hereditary algebras

L Hille, M Perling - Annales de l'Institut Fourier, 2014 - numdam.org
Let X be any rational surface. We construct a tilting bundle T on X. Moreover, we can choose
T in such way that its endomorphism algebra is quasi-hereditary. In particular, the bounded …

Cycles, derived categories, and rationality

A Auel, M Bernardara - Surveys on recent developments in …, 2017 - books.google.com
Our main goal is to give a sense of recent developments in the (stable) rationality problem
from the point of view of unramified cohomology and 0-cycles as well as derived categories …