A Derived Equivalence For A Del Pezzo Surface Of Degree 6 Over An Arbitrary Field

Details A Derived Equivalence For A Del Pezzo Surface Of Degree 6 Over An Arbitrary Field A Derived Equivalence For A Del Pezzo Surface Of Degree 6 Over An Arbitrary Field

2009-08-23

arxiv.org/abs/0908.3281v3

Mathematics

Algebraic Geometry

Scientific paper

Let $S$ be a degree six del Pezzo surface over an arbitrary field $F$. Motivated by the first author's classification of all such $S$ up to isomorphism in terms of a separable $F$-algebra $B \times Q \times F$, and by his K-theory isomorphism $K_n(S) \cong K_n(B \times Q \times F)$ for $n \ge 0$, we prove an equivalence of derived categories $$ \sD^b(\coh S) \equiv \sD^b(\mod A) $$ where $A$ is an explicitly given finite dimensional $F$-algebra whose semisimple part is $B \times Q \times F$. Submitted to the Journal of K-theory

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