Tim Kobert

collaborators

2 papers

math.OC2020

Spectrahedral representation of polar orbitopes

Tim Kobert, Claus Scheiderer

Let $K$ be a compact Lie group and $V$ a finite-dimensional representation of $K$ . The orbitope of a vector $x \in V$ is the convex hull $O_{x}$ of the orbit $K x$ in $V$ . We…

math.RT2016

A Spectrahedral Representation for Polar Orbitopes

Tim Kobert

Let $G$ be a Lie group with real semisimple Lie algebra $g$ . Further let $g = k \oplus p$ be a Cartan decomposition. The maximal compact…