Anna Wienhard

collaborators

3 papers

math.GT2024

Invariant multi-functions and Hamiltonian flows for surface group representations

Fernando Camacho-Cadena, James Farre, Anna Wienhard

Goldman defined a symplectic form on the smooth locus of the $G$ -character variety of a closed, oriented surface $S$ for a Lie group $G$ satisfying very general hypotheses. He then…

math.RA2024

$SL_{2}$ -like Properties of Matrices Over Noncommutative Rings and Generalizations of Markov Numbers

Zachary Greenberg, Dani Kaufman, Anna Wienhard

We study $2 \times 2$ matrices over noncommutative rings with anti-involution, with a special focus on the symplectic group $Sp_{2} (A, σ)$ . We define traces and dete…

math.GT2023

Fiber bundles associated with Anosov representations

Daniele Alessandrini, Sara Maloni, Nicolas Tholozan +1

Anosov representations $ρ$ of a hyperbolic group $Γ$ into a semisimple Lie group $G$ are known to admit cocompact domains of discontinuity in flag varieties $G / Q$ , endowing the com…

Invariant multi-functions and Hamiltonian flows for surface group representations

SL2​-like Properties of Matrices Over Noncommutative Rings and Generalizations of Markov Numbers

Fiber bundles associated with Anosov representations

$SL_{2}$ -like Properties of Matrices Over Noncommutative Rings and Generalizations of Markov Numbers