2 papers
math.AG2017
Topologically singular points in the moduli space of Riemann surfaces
Antonio F. Costa, Ana M. Porto
In 1962 E. H. Rauch established the existence of points in the moduli space of Riemann surfaces not having a neighbourhood homeomorphic to a ball. These points are called here topo…
math.GT2014
The double of the doubles of Klein surfaces
Antonio F. Costa, Paola Cristofori, Ana M. Porto
A Klein surface is a surface with a dianalytic structure. A double of a Klein surface is a Klein surface such that there is a degree two morphism (of Klein surfaces) $Y\rig…