2 papers
math.GT2000
Large characteristic subgroups of surface groups not containing any simple loops
Martin Pikaart
We determine the largest (i.e. smallest index) characteristic subgroup of surface groups not containing any simple loops.
alg-geom1995
An orbifold partition of
Martin Pikaart
We define a partition of and show that the cohomology of in a given degree admits a filtration whose respective quotients are isomorphic t…