On the moduli space of quasi-homogeneous functions

Abstract

We relate the moduli space of analytic equivalent germs of reduced quasi-homogeneous functions at $({\mathbb{C}}^2,0)$ with their bi-Lipschitz equivalence classes. We show that any non-degenerate continuous family of (reduced) quasi-homogeneous functions with constant Henry-Parusiński invariant is analytically trivial. Further we show that there are only a finite number of distinct bi-Lipschitz classes among quasi-homogeneous functions with the same Henry-Parusiński invariant providing a maximum quota for this number.