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Published December 1, 2009 | Submitted
Journal Article Open

A formula for inserting point masses

Abstract

Let dμ be a probability measure on the unit circle and dν be the measure formed by adding a pure point to dμ. We give a formula for the Verblunsky coefficients of dν, based on a result of Simon.

Additional Information

© 2009 Elsevier. Received 27 October 2007. Available online 26 February 2009. It is a pleasure to thank Professor Barry Simon for his guidance and Cherie Galvez for proof reading this paper.

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