C. Georgescu

collaborators

2 papers

math.GR2025

Frame Vector Group Representations and Amenability Properties

Dorin Ervin Dutkay, Catalin Georgescu, Gabriel Picioroaga

We provide a new characterization of amenability for countable groups, based on frame representations admitting almost invariant vectors. By relaxing the frame inequalities, thereb…

math.OA2012

Fuglede Kadison determinants for operators in the von Neumann algebra of an equivalence relation

Catalin Georgescu, Gabriel Picioroaga

We calculate the Fuglede-Kadison determinant for operators of the form $\sum_{i = 1}^{n} M_{f_{i}} L_{g_{i}}$ where $L_{g_{i}}$ are unitaries or partial isometries coming from Borel (partial)…