2010

Chern characters and Hirzebruch-Riemann-Roch formula for matrix factorizations

Polishchuk, Alexander, Vaintrob, Arkady

Understand

We study the category of matrix factorizations for an isolated hypersurface singularity.

  • We compute the canonical bilinear form on the Hochschild homology of this category.
  • We find explicit expressions for the Chern character and the boundary-bulk maps and derive an analog of the Hirzebruch-Riemann-Roch formula for the Euler characteristic of the Hom-space between a pair of matrix factorizations.
  • We also establish G-equivariant versions of these results.

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