Morgan Cesa

collaborators

2 papers

math.GR2015

Dehn functions of higher rank arithmetic groups of type $A_{n}$ in products of simple Lie groups

Morgan Cesa

Suppose $Γ$ is an arithmetic group defined over a global field $K$ , that the $K$ -type of $Γ$ is $A_{n}$ with $n \geq 2$ , and that the ambient semisimple group that contains $Γ$ as a…

math.GR2015

$H^{2} (S L_{3} (Z [t]); Q)$ is infinite dimensional

Morgan Cesa, Brendan Kelly

We prove that $H^{2} (S L_{3} (Z [t]); Q)$ is infinite dimensional. The proof follows an outline similar to recent results by Cobb, Kelly, and Wortman, using the Euclidea…

Dehn functions of higher rank arithmetic groups of type An​ in products of simple Lie groups

H2(SL3​(Z[t]);Q) is infinite dimensional

Dehn functions of higher rank arithmetic groups of type $A_{n}$ in products of simple Lie groups

$H^{2} (S L_{3} (Z [t]); Q)$ is infinite dimensional