bo198214 Wrote:There are no denominators depending on the value of any .

You're right about , and I was wrong.

I was thinking of A. A. Bennett "The Iteration of Functions of one Variable" where he says (page 30)

Bennett Wrote:The only other cases which can arise are the singular ones, and in these, .Which is refering to the Carleman matrix of a function with a fixed point at zero. So if and then the Carleman matrix is not invertible (i.e. singular). This is completely different than what I remember reading, and it doesn't apply to at all. This means that the case is a singularity of my generating functions, and not a singularity of parabolic iteration.

Andrew Robbins