08/11/2009, 01:07 PM

(08/11/2009, 12:02 PM)Gottfried Wrote: and fractional "iterates of inversion" is then multivalued with complex heights according to the complex roots of -1

inv°[s](f(x)) = f°[(-1)^s](x)

Ya true, for iteration operators we dont need a new technique for general operator iteration, it can be reduced to powers of the exponent .