English

Singularity categories of skewed-gentle algebras

Representation Theory 2015-02-10 v2

Abstract

Let KK be an algebraically closed field. Let (Q,Sp,I)(Q,Sp,I) be a skewed-gentle triple, (Qsg,Isg)(Q^{sg},I^{sg}) and (Qg,Ig)(Q^g,I^{g}) be its corresponding skewed-gentle pair and associated gentle pair respectively. It proves that the skewed-gentle algebra KQsg/<Isg>KQ^{sg}/< I^{sg}> is singularity equivalent to KQ/<I>KQ/< I>. Moreover, we use (Q,Sp,I)(Q,Sp,I) to describe the singularity category of KQg/<Ig>KQ^g/< I^g>. As a corollary, we get that gldimKQsg/<Isg><\mathrm{gldim} KQ^{sg}/< I^{sg}><\infty if and only if gldimKQ/<I><\mathrm{gldim} KQ/< I><\infty if and only if gldimKQg/<Ig><\mathrm{gldim} KQ^{g}/< I^{g}><\infty.

Keywords

Cite

@article{arxiv.1409.5960,
  title  = {Singularity categories of skewed-gentle algebras},
  author = {Xinhong Chen and Ming Lu},
  journal= {arXiv preprint arXiv:1409.5960},
  year   = {2015}
}

Comments

13 pages, 1 figure