Exceptional sequences and derived autoequivalences

Details Exceptional sequences and derived autoequivalences Exceptional sequences and derived autoequivalences

2007-12-31

arxiv.org/abs/0801.0173v1

Mathematics

Algebraic Geometry

17 pages

Scientific paper

We prove a general theorem that gives a non trivial relation in the group of derived autoequivalences of a variety (or stack) X, under the assumption that there exists a suitable functor from the derived category of another variety Y admitting a full exceptional sequence. Applications include the case in which X is Calabi-Yau and either X is a hypersurface in Y (this extends a previous result by the author and R.L. Karp, where Y was a weighted projective space) or Y is a hypersurface in X. The proof uses a resolution of the diagonal of Y constructed from the exceptional sequence.

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