Parseval Frames from Compressions of Cuntz Algebras

Nicholas Christoffersen, Dorin Ervin Dutkay, Gabriel Picioroaga +1

A row co-isometry is a family $(V_i{)}_{i=0}^{N-1}$ of operators on a Hilbert space, subject to the relation $$\sum _{i=0}^{N-1}{V}_i{V}_i^{\ast }=I.$$ As shown in \cite{BJK00}, row co-isometri…