English

Equality of uniform and Carleman spectra for bounded measurable functions

Functional Analysis 2012-06-29 v1

Abstract

In this paper we study various types of spectra of functions ϕ:\jjX\phi:\jj\to X, where \jj\in\{\r_+,\r\} and XX is a complex Banach space. We show that uniform spectrum defined in [15] coincides with Carleman spectrum for ϕL(,˚X)\phi\in L^{\infty}(\r,X). This result holds true also for Laplace (half-line) spectrum for \phi\in L^{\infty}(\r_+,X). We also indicate a class of bounded measurable functions for which Laplace spectrum and Carleman spectrum are equal

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Cite

@article{arxiv.1206.6553,
  title  = {Equality of uniform and Carleman spectra for bounded measurable functions},
  author = {Bolis Basit and Alan J. Pryde},
  journal= {arXiv preprint arXiv:1206.6553},
  year   = {2012}
}

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20 pages