More than Two Types

Abstract

So far we have considered only a very special case in which our population is classified into just two types. The frequencies are then characterised by a onedimensional diffusion and one dimensional diffusions are, at least in principle, relatively straightforward to study. More generally, suppose that our population is classified into K different types. We’re not going to develop the general theory of multidimensional diffusions, but let’s see what happens in a special case.