25 citations · 128 across the 13 of their papers we have counts for
16 papers
A McCool Whitehead type theorem for finitely generated subgroups of
Mladen Bestvina, Mark Feighn, Michael Handel
S. Gersten announced an algorithm that takes as input two finite sequences and of conjugacy classes of finitely generated sub…
The conjugacy problem for UPG elements of
Mark Feighn, Michael Handel
An element of the outer automorphism group $\Out(\f)$ of the rank free group is {\it polynomially growing} if the word lengths of conjugacy classes in $\f$ grow at mo…
Algorithmic constructions of relative train track maps and CTs
Mark Feighn, Michael Handel
Every rotationless outer automorphism of a finite rank free group is represented by a particularly useful relative train track map called a CT. The main result of this paper is tha…
Subfactor projections
Mladen Bestvina, Mark Feighn
When two free factors A and B of a free group F_n are in "general position" we define the projection of B to the splitting complex (alternatively, the complex of free factors) of A…
Hyperbolicity of the complex of free factors
Mladen Bestvina, Mark Feighn
We develop the geometry of folding paths in Outer space and, as an application, prove that the complex of free factors of a free group of finite rank is hyperbolic.
Notes on Sela's work: Limit groups and Makanin-Razborov diagrams
Mladen Bestvina, Mark Feighn
This is the first in a planned series of papers giving an alternate approach to Zlil Sela's work on the Tarski problems. The present paper is an exposition of work of Kharlampovich…