2 papers
math.QA2005
A recurrence relation for characters of highest weight integrable modules for affine Lie algebras
William J. Cook, Haisheng Li, Kailash C. Misra
Using certain results for the vertex operator algebras associated with affine Lie algebras we obtain recurrence relations for the characters of integrable highest weight irreducibl…
math.GM2004
On the Constructive Inverse Problem in Differential Galois Theory
William J. Cook, Claude Mitschi, Michael F. Singer
We give sufficient conditions for a linear differential equation to have a given semisimple group as its Galois group. For any linear algebraic group G given as a semidirect produc…