String Cohomology of a Toroidal Singularity

Details String Cohomology of a Toroidal Singularity String Cohomology of a Toroidal Singularity

1998-02-10

arxiv.org/abs/math/9802052v1

Mathematics

Algebraic Geometry

LaTeX, 10 pages

Scientific paper

We construct explicitly regular sequences in the semigroup ring $R=\CC[K]$ of lattice points of the graded cone $K$. We conjecture that the quotients of $R$ by these sequences describe locally string-theoretic cohomology of a toroidal singularity associated to $K$. As a byproduct, we give an elementary proof of the result of Hochster that semigroup rings of rational polyhedral cones are Cohen-Macaulay.

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