Moduli spaces of hyperelliptic curves with A and D singularities

Maksym Fedorchuk

Published 2010-07-27, updated 2010-12-02Version 2

We introduce moduli spaces of quasi-admissible hyperelliptic covers with at worst A and D singularities. The stability conditions for these moduli spaces depend on two parameters describing allowable singularities. By varying these parameters, we interpolate between the stacks of stable limits of A and D singularities and the quotients of the versal deformation spaces of A and D singularities by a natural $\mathbb{G}_m$ action.