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November 29, 2010
Monday, November 29
Geometry and Topology
Time: 15:30
Speaker: Thomas Huttemann (Belfast)
Title: "Algebraic K-theory of projective toric schemes"
Room: MC 107

Abstract: A projective toric scheme is specified by combinatorial data, viz., a polytope with integral vertex coordinates. I will show how the geometry of the polytope leads to a simple splitting result in the algebraic K-theory of the scheme. In the special case of projective space (given by a standard simplex) this reduces to the well-known splitting of K(P^n) into n+1 copies of the K-theory of the ground ring. - The combinatorial approach is flexible enough to include the case of schemes defined over an arbitrary (possibly non-commutative) ring.