A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.
We study polar orbitopes, i.e. convex hulls of orbits of a polar representation of a compact Lie group. The face structure is studied by means of the gradient momentum map and it is shown that every face is exposed and is again a polar orbitope. Up to conjugation the faces are completely determined by the momentum poly…
We develop methods to learn dictionaries invariant under group symmetries, useful in cryo-EM and tracking.
The study connects circle actions, trigonometric polynomials, and thickenings of metric spaces.
Geometrically describes Satake compactifications without root data.