Generically trivial derived categories

Abstract

We study generic objects in triangulated categories and characterize the finite dimensional algebras A such that the derived categories D( A) are generically trivial. This is an analogue of a result of Crawley-Boevey for module categories. As a consequence, we show that D( A) is generically trivial if and only if the category of perfect complexes Kb( A) is locally finite.

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