Dihedral monodromy of cone spherical metrics
arXiv:2112.00594
Abstract
Among metrics of constant positive curvature on a punctured compact Riemann surface with conical singularities at the punctures, dihedral monodromy means that the action of the monodromy group globally preserves a pair of antipodal points. Using recent results about local invariants of quadratic differentials, we give a complete characterization of the set of conical angles realized by some cone spherical metric with dihedral monodromy.
21 pages, to appear in "Illinois Journal of Mathematics"