Large tilting sheaves over weighted noncommutative regular projective curves
Algebraic Geometry
2017-02-09 v3 Representation Theory
Abstract
Let be a weighted noncommutative regular projective curve over a field . The category of quasicoherent sheaves is a hereditary, locally noetherian Grothendieck category. We classify all tilting sheaves which have a non-coherent torsion subsheaf. In case of nonnegative orbifold Euler characteristic we classify all large (that is, non-coherent) tilting sheaves and the corresponding resolving classes. In particular we show that in the elliptic and in the tubular cases every large tilting sheaf has a well-defined slope.
Cite
@article{arxiv.1508.03833,
title = {Large tilting sheaves over weighted noncommutative regular projective curves},
author = {Lidia Angeleri Hügel and Dirk Kussin},
journal= {arXiv preprint arXiv:1508.03833},
year = {2017}
}
Comments
52 pages, 1 figure. v2: revised Cor. 6.6 and 7.15; a few minor fixes. v3: revised proof of Prop. 5.7; a few minor fixes and improvements