Virasoro algebra and wreath product convolution
arXiv:math/0006087
Abstract
We present a group theoretic construction of the Virasoro algebra in the framework of wreath products. This can be regarded as a counterpart of a geometric construction of Lehn in the theory of Hilbert schemes of points on a surface.
Corrections of typos including signs in Lemma 1 and Theorem 4, and other minor changes, to appear in Journal of Alg