Contents Online
Mathematical Research Letters
Volume 22 (2015)
Number 6
Refined blowups
Pages: 1717 – 1732
DOI: https://dx.doi.org/10.4310/MRL.2015.v22.n6.a9
Authors
Abstract
Categorical resolution of singularities has been constructed in [KL]. It proceeds by alternating two steps of seemingly different nature. We show how to use the formalism of filtered derived categories to combine the two steps into one. This results in a certain rather natural categorical refinement of the usual blowup of an algebraic variety in a closed subscheme.
Accepted 31 August 2015
Published 23 May 2016