Mathematics – Algebraic Geometry
Scientific paper
2011-02-15
Mathematics
Algebraic Geometry
43 pages, comments welcome
Scientific paper
We describe the pushforward of a matrix factorisation along a ring morphism in terms of an idempotent defined using relative Atiyah classes, and use this construction to study the convolution of kernels defining integral functors between categories of matrix factorisations. We give an elementary proof of a formula for the Chern character of the convolution generalising the Hirzebruch-Riemann-Roch formula of Polishchuk and Vaintrob.
Dyckerhoff Tobias
Murfet Daniel
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