I am working on Galton-Watson processes and I encountered the term "homographic random variables". Although I googled, I could not find anything. Do you have any idea about it? Do you know any book about it?
homographic random variable
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0Maybe if you copy out t$h$e paragraph with the offending term, we could puzzle it out from the context. – 2012-02-24
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These are nonnegative integer random variables $N$ whose generating function $g_N:s\mapsto\mathrm E(s^N)$ is homographic, that is, such that $g_N(s)=(as+b)/(cs+d)$ for some parameters $(a,b,c,d)$.