A simple counterexample to the Jordan-Hölder property for derived categories
arXiv:1304.0903
Abstract
A counterexample to the Jordan-Hölder property for semiorthogonal decompositions of derived categories of smooth projective varieties was constructed by Böhning, Graf von Bothmer and Sosna. In this short note we present a simpler example by realizing Bondal's quiver in the derived category of a blowup of the projective space.
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