Wonderful resolutions and categorical crepant resolutions of singularities
Abstract
Let be an algebraic variety with Gorenstein singularities. We define the notion of a wonderful resolution of singularities of by analogy with the theory of wonderful compactifications of semi-simple linear algebraic groups. We prove that if has rational singularities and has a wonderful resolution of singularities, then admits a categorical crepant resolution of singularities. As an immediate corollary, we get that all determinantal varieties defined by the minors of a generic square/symmetric/skew-symmetric matrix admit categorical crepant resolution of singularities. We also discuss notions of minimality for a categorical resolution of singularities and we explore some links between minimality and crepancy for such resolutions.
Keywords
Cite
@article{arxiv.1209.1564,
title = {Wonderful resolutions and categorical crepant resolutions of singularities},
author = {Roland Abuaf},
journal= {arXiv preprint arXiv:1209.1564},
year = {2013}
}
Comments
38 pages. Some modifications in the presentation