2007

The Mukai pairing, I: a categorical approach

Caldararu, Andrei, Willerton, Simon

Understand

We study the Hochschild homology of smooth spaces, emphasizing the importance of a pairing which generalizes Mukai's pairing on the cohomology of K3 surfaces.

  • We show that integral transforms between derived categories of spaces induce, functorially, linear maps on homology.
  • Adjoint functors induce adjoint linear maps with respect to the Mukai pairing.
  • We define a Chern character with values in Hochschild homology, and we discuss analogues of the Hirzebruch-Riemann-Roch theorem and the Cardy Condition from physics.

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