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New York Journal of Mathematics
Volume 30 (2024), 1534-1555

  

Piyasa Sarkar and S. Sundar

Induced isometric representations

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Published: October 16, 2024.
Keywords: Induced isometric representations, prime CCR flows, index.
Subject [2010]: Primary 47D03 ; Secondary 46L55.

Abstract
Let σ be an isometric representation of Nd on a Hilbert space H. We induce σ to an isometric representation V of R+d on another Hilbert space K. We show that the map σ --> V, restricted to strongly pure isometric representations, preserves index and irreducibility. As an application, we show that, for every k in {0, 1,2,...} ∪ {∞}, there is a continuum of prime multiparameter CCR flows with index k.

Acknowledgements

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Author information

Piyasa Sarkar
Institute of Mathematical Sciences
A CI of Homi Bhabha National Institute
4th cross street, CIT Campus, Taramani
Chennai 600113, India

piyasa10@gmail.com

S. Sundar
Institute of Mathematical Sciences
A CI of Homi Bhabha National Institute
4th cross street, CIT Campus, Taramani
Chennai 600113, India

sundarsobers@gmail.com