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On \(\textrm{H}-\)trivial line bundles on toric DM stacks of dim \(\ge 3\)

  • Lev Borisov,
  • Chengxi Wang

摘要

We study line bundles on smooth toric Deligne-Mumford stacks \({\mathbb {P}}_{\mathbf {\Sigma }}\) P Σ of arbitrary dimension. We give a sufficient condition for when infinitely many line bundles on \({\mathbb {P}}_{\mathbf {\Sigma }}\) P Σ have trivial cohomology. In dimension three, this sufficient condition is also a necessary condition under the technical assumption that \(\mathbf {\Sigma }\) Σ has no more than one pair of collinear rays.