Variation of geometric invariant theory quotients and derived categories
We study the relationship between derived categories of factorizations on gauged Landau–
Ginzburg models related by variations of the linearization in Geometric Invariant Theory …
Ginzburg models related by variations of the linearization in Geometric Invariant Theory …
A category of kernels for equivariant factorizations and its implications for Hodge theory
We provide a factorization model for the continuous internal Hom, in the homotopy category
of k-linear dg-categories, between dg-categories of equivariant factorizations. This motivates …
of k-linear dg-categories, between dg-categories of equivariant factorizations. This motivates …
Equivalence of the derived category of a variety with a singularity category
MU Isik - International Mathematics Research Notices, 2013 - ieeexplore.ieee.org
Equivalence of the Derived Category of a Variety with a Singularity Category Page 1 M. Umut
Isik (2013) “Equivalence of Derived Category and Singularity Category,” International …
Isik (2013) “Equivalence of Derived Category and Singularity Category,” International …
Bogomolov–Tian–Todorov theorems for Landau–Ginzburg models
L Katzarkov, M Kontsevich, T Pantev - Journal of differential …, 2017 - projecteuclid.org
In this paper we prove the smoothness of the moduli space of Landau–Ginzburg models. We
formulate and prove a Bogomolov–Tian–Todorov theorem for the deformations of Landau …
formulate and prove a Bogomolov–Tian–Todorov theorem for the deformations of Landau …
Differential graded Koszul duality: An introductory survey
L Positselski - Bulletin of the London Mathematical Society, 2023 - Wiley Online Library
This is an overview on derived nonhomogeneous Koszul duality over a field, mostly based
on the author's memoir L. Positselski, Memoirs of the American Math. Society 212 (2011) …
on the author's memoir L. Positselski, Memoirs of the American Math. Society 212 (2011) …
The tilting–cotilting correspondence
L Positselski, J Šťovíček - International Mathematics Research …, 2021 - academic.oup.com
To a big-tilting object in a complete, cocomplete abelian category with an injective
cogenerator we assign a big-cotilting object in a complete, cocomplete abelian category with …
cogenerator we assign a big-cotilting object in a complete, cocomplete abelian category with …
Flat quasi-coherent sheaves as direct limits, and quasi-coherent cotorsion periodicity
L Positselski, J Stovicek - arXiv preprint arXiv:2212.09639, 2022 - arxiv.org
We show that every flat quasi-coherent sheaf on a quasi-compact quasi-separated scheme
is a directed colimit of locally countably presentable flat quasi-coherent sheaves. More …
is a directed colimit of locally countably presentable flat quasi-coherent sheaves. More …
Matrix factorizations and cohomological field theories
A Polishchuk, A Vaintrob - Journal für die reine und angewandte …, 2016 - degruyter.com
We give a purely algebraic construction of a cohomological field theory associated with a
quasihomogeneous isolated hypersurface singularity W and a subgroup G of the diagonal …
quasihomogeneous isolated hypersurface singularity W and a subgroup G of the diagonal …
Coderived and contraderived categories of locally presentable abelian DG-categories
L Positselski, J Stovicek - arXiv preprint arXiv:2210.08237, 2022 - arxiv.org
The concept of an abelian DG-category, introduced by the first-named author in arXiv:
2110.08237, unites the notions of abelian categories and (curved) DG-modules in a …
2110.08237, unites the notions of abelian categories and (curved) DG-modules in a …
Categorical and K-theoretic Hall algebras for quivers with potential
T Pădurariu - Journal of the Institute of Mathematics of Jussieu, 2023 - cambridge.org
Given a quiver with potential $(Q, W) $, Kontsevich–Soibelman constructed a cohomological
Hall algebra (CoHA) on the critical cohomology of the stack of representations of $(Q, W) …
Hall algebra (CoHA) on the critical cohomology of the stack of representations of $(Q, W) …