This is great! Thanks for the reference. There are some interesting methods to solve these kinds of "recursion" equations, especially when the integral operato

This is great! Thanks for the reference. There are some interesting methods to solve these kinds of "recursion" equations, especially when the integral operator, M in this paper, has the given properties (e.g., spectral radius < 1). For example, if M = A + P, where A and P are two other operators whose inverse, for example, is fast to evaluate, there are a certain number of iterative splitting methods which work extremely well and can exploit this structure for very fast convergence. I'm sure people have looked at this and similar ideas, but I have not seen many references as far as I know.