Toric stratifications of character varieties
摘要
We establish the curious Lefschetz property for generic character varieties of Riemann surfaces conjectured by Hausel, Letellier and Rodriguez-Villegas. Our main tool applies directly in the case when there is at least one puncture where the local monodromy has distinct eigenvalues. We pass to a vector bundle over the character variety, which is then stratified into strata which look like vector bundles over varieties associated to positive braids. These varieties are in turn stratified into strata that look like