Cotilting sheaves over weighted noncommutative regular projective curves
Representation Theory
2020-09-28 v2 Algebraic Geometry
Category Theory
Abstract
We consider the category of quasicoherent sheaves where is a weighted noncommutative regular projective curve over a field . This category is a hereditary, locally noetherian Grothendieck category. We classify all indecomposable pure-injective sheaves and all cotilting sheaves of slope . In the cases of nonnegative orbifold Euler characteristic this leads to a classification of pure-injective indecomposable sheaves and a description of all large cotilting sheaves in .
Cite
@article{arxiv.1911.02485,
title = {Cotilting sheaves over weighted noncommutative regular projective curves},
author = {Dirk Kussin and Rosanna Laking},
journal= {arXiv preprint arXiv:1911.02485},
year = {2020}
}
Comments
28 pages, 1 figure. v2: Some typos and formulations fixed, abstract slightly changed, extended number 6.12, additional references, more streamlined recapitulation of the geometric setting