A generalized Hirzebruch Riemann-Roch theorem

This short note proves a generalization of the Hirzebruch Riemann-Roch theorem equivalent to the Cardy condition described in [1]. This is done using an earlier result [4] that explicitly describes what the Mukai pairing in [1] descends to in Hodge cohomology via the Hochschild-Kostant-Rosenberg map twisted by the root Todd genus.Comment: 5 page

Hochschild (co)homology of the Dunkl operator quantization of Z2\Z_2-singularity

We study Hochschild (co)homology groups of the Dunkl operator quantization of $\Z_2$-singularity constructed by Halbout and Tang. Further, we study traces on this algebra and prove a local algebraic index formula.Comment: 26 pages. Comments and suggestions welcome. Some typos and other minor mistakes correcte