Asaf Hadari

activity

20122020

collaborators

4 papers

math.GT2020

Mapping class groups of surfaces of genus $\geq 3$ do not virtually surject to $Z$

Asaf Hadari

We prove a well known conjecture of Nikolai Ivanov which states that if $X$ is a surface of genus $\geq 3$ (with any number of punctures and boundary components), $Mod (X)$ is…

math.GT2019

Separating subgroups of mapping class groups in homological representations

Asaf Hadari

Let $Γ$ be either the mapping class group of a closed surface of genus $\geq 2$ , or the automorphism group of a free group of rank $\geq 3$ . Given any homological representation $ρ…

math.GT2018

Non virtually solvable subgroups of mapping class groups have non virtually solvable representations

Asaf Hadari

Let $Σ$ be a compact orientable surface of finite type with at least one boundary component. Let $Γ \leq Mod (Σ)$ be a non virtually solvable subgroup. We answer a question…

math.GR2012

Linear representations of Aut(F_r) on the homology of representation varieties

Yael Algom-Kfir, Asaf Hadari

Let G be a compact semisimple linear Lie group. We study the action of Aut(F_r) on the space H_*(G^r;\QQ). We compute the image of this representation and prove that it only depend…

Mapping class groups of surfaces of genus ≥3 do not virtually surject to Z

Separating subgroups of mapping class groups in homological representations

Non virtually solvable subgroups of mapping class groups have non virtually solvable representations

Linear representations of Aut(F_r) on the homology of representation varieties

Mapping class groups of surfaces of genus $\geq 3$ do not virtually surject to $Z$