Pritam Ghosh

collaborators

3 papers

math.GR2023

Relative hyperbolicity of free extensions of free groups

Pritam Ghosh, Funda Gültepe

We give necessary and sufficient conditions for a free-by-free group to be relatively hyperbolic with a cusp-preserving structure. Namely, if $ϕ_{1}, \dots, ϕ_{k}$ is a collection o…

math.GR2018

Relative hyperbolicity of free-by-cyclic extensions

Pritam Ghosh

Given a finite rank free group $F$ of $rank (F) \geq 3$ , we show that the mapping torus of $ϕ$ is (strongly) relatively hyperbolic if $ϕ$ is exponentially…

math.GR2018

Relatively irreducible free subroups in Out( $F$ )

Pritam Ghosh

We prove that given a finite rank free group $F$ of rank $\geq 3$ and two exponentially growing outer automorphisms $ψ$ and $ϕ$ with dual lamination pairs $Λ_{ψ}^{\pm}$ and $Λ…

Relative hyperbolicity of free extensions of free groups

Relative hyperbolicity of free-by-cyclic extensions

Relatively irreducible free subroups in Out(F)

Relatively irreducible free subroups in Out( $F$ )