Videos

Centres of NCCRs are KLT

Presenter
April 8, 2013
Keywords:
  • noncommutative algebra
  • noncommutative algebraic geometry
  • module theory
  • ring theory
  • representation theory
  • D-module
  • deformation quantization
  • log-canonical bundles
  • log-canonical singularities
MSC:
  • 14E15
  • 14Exx
  • 14-xx
  • 81Rxx
  • 81R60
  • 81R50
  • 81Sxx
  • 81S10
  • 14F10
  • 14Fxx
  • 16Gxx
Abstract
Stafford and Van den Bergh have shown that centres of Noncommutative crepant resolutions have at most rational singularities. We use their techniques to extend their result, showing that they have at worst log terminal singularities. We also show that a homologically homogeneous algebra has a centre and ramiifcation divisor which is Kawamata log terminal. This is joint work with Takehiko Yasuda.