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K-Theory of non-linear projective toric varieties

  • Thomas Hüttemann
Published/Copyright: January 30, 2009
Forum Mathematicum
From the journal Volume 21 Issue 1

Abstract

We define a category of quasi-coherent sheaves of topological spaces on projective toric varieties and prove a splitting result for its algebraic K-theory, generalising earlier results for projective spaces. The splitting is expressed in terms of the number of interior lattice points of dilations of a polytope associated to the variety. The proof uses combinatorial and geometrical results on polytopal complexes. The same methods also give an elementary explicit calculation of the cohomology groups of a projective toric variety over any commutative ring.

Received: 2007-01-31
Revised: 2007-05-15
Published Online: 2009-01-30
Published in Print: 2009-January

© de Gruyter 2009

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