Characteristic Functions for Ergodic Tuples

Santanu Dey, Rolf Gohm

Research output: Contribution to journalArticlepeer-review

8 Citations (SciVal)
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Motivated by a result on weak Markov dilations, we define a notion of characteristic function for ergodic and coisometric row contractions with a one-dimensional invariant subspace for the adjoints. This extends a definition given by G. Popescu. We prove that our characteristic function is a complete unitary invariant for such tuples and show how it can be computed.
Original languageEnglish
Pages (from-to)43-63
Number of pages21
JournalIntegral Equations and Operator Theory
Issue number1
Publication statusPublished - 01 May 2007


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