activity
19942026
most citedConvex cocompact subgroups of mapping class groups

134 citations · 447 across the 37 of their papers we have counts for

collaborators

41 papers

math.GR2026

Relative free splitting and free factor complexes: An overview

Michael Handel, Lee Mosher

For any group and any free factor system of , the relative outer automorphism group acts naturally on the relative free splitting com…

math.GR2025

Relative Free Splitting Complexes III: Stable Translation Lengths and Filling Paths

Michael Handel, Lee Mosher

This is the last of a three part work about relative free splitting complexes and their actions by relative outer automorphism groups $\text{Out}(Γ;\m…

math.GR2022

Relative Free Splitting Complexes II: Stable Translation Lengths and the Two Over All Theorem

Michael Handel, Lee Mosher

This is the second of a three part study of relative free splitting complexes , known from Part~I to be Gromov hyperbolic. Here and in~Part III we focus…

math.GR2020

The topology, geometry and dynamics of free groups. Part I: Outer space, fold paths, and the Nielsen/Whitehead problems

Lee Mosher

The object of this expository work is to try to unveil the topological/geometric intuition behind the theory of free groups and their automorphism and outer automorphism groups. Th…

math.GR2019★ 7 cited

Second bounded cohomology and WWPD

Michael Handel, Lee Mosher

Given a group acting on a Gromov hyperbolic space, Bestvina and Fujiwara introduced the WPD property --- weak proper discontinuity --- for studying the 2nd bounded cohomology of th…

math.GR2018

Virtually abelian subgroups of are abelian

Michael Handel, Lee Mosher

When studying subgroups of , one often replaces a given subgroup with one of its finite index subgroups so that virtual properties of become actual properti…