Explicit expressions for Virasoro singular vectors

A bstract We present two explicit expressions for generic singular vectors of type ( r, s ) of the Virasoro algebra. These results follow from the paper of Bauer et al. which presented recursive methods to construct the vectors. The expressions presented here generalise the results of Benoit-Saint Aubin for the type (1 , s ) singular vectors in two different ways: the first simply solves the recursion through the use of partitions; the second gives explicit formulae for the coefficients in a particular expansion. A Mathematica notebook is available which implements the formulae.