Hilbert-Schmidt Operators vs. Integrable Systems of Elliptic Calogero-Moser Type III. The Heun Case

Simon N. M. Ruijsenaars

The Heun equation can be rewritten as an eigenvalue equation for an ordinary differential operator of the form $-d^2/d{x}^2+V(g;x)$, where the potential is an elliptic function depen…