106 citations · 247 across the 24 of their papers we have counts for
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math.CT2010★ 22 cited
Generating the bounded derived category and perfect ghosts
Steffen Oppermann, Jan Stovicek
We show, for a wide class of abelian categories relevant in representation theory and algebraic geometry, that the bounded derived categories have no non-trivial strongly finitely…
math.CT2010
Cluster tilting and complexity
Petter Andreas Bergh, Steffen Oppermann
We study the notion of positive and negative complexity of pairs of objects in cluster categories. The first main result shows that the maximal complexity occurring is either one,…