Journal of the Korean Society for Industrial and Applied Mathematics

Korean Society for Industrial and Applied Mathematics (한국산업응용수학회)
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SUBNORMAL WEIGHTED SHIFTS WHOSE MOMENT MEASURES HAVE POSITIVE MASS AT THE ORIGIN

  • Lee, Mi Ryeong (DEPARTMENT OF MATHEMATICS, KYUNGPOOK NATIONAL UNIVERSITY) ;
  • Kim, Kyung Mi (DEPARTMENT OF MATHEMATICS, KYUNGPOOK NATIONAL UNIVERSITY)
  • Received : 2012.01.26
  • Accepted : 2012.11.19
  • Published : 2012.12.25
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Abstract

In this note we examine the effects on subnormality of adding a new weight or changing some weights for a given subnormal weighted shift. We consider a subnormal weighted shift with a positive point mass at the origin by means of continuous functions. Finally, we introduce some methods for evaluating point mass at the origin about moment measures associated with weighted shifts.

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Acknowledgement

Supported by : National Research Foundation of Korea(NRF)

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