Duals of Weighted Exponential Systems

  • Authors:
  • Gang Joon Yoon;Christopher Heil

  • Affiliations:
  • National Institute of Mathematical Sciences, Daejeon, Korea 305-811;School of Mathematics, Georgia Institute of Technology, Atlanta, USA 30332-0160

  • Venue:
  • Acta Applicandae Mathematicae: an international survey journal on applying mathematics and mathematical applications
  • Year:
  • 2012

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Abstract

The paper considers the basis and frame properties of the system of weighted exponentials ${\mathcal{E}}(g,\mathbb{Z}\backslash F) = \{e^{2\pi i n x} g(x)\}_{n\in\mathbb{Z}\backslash F}$ in $L^{2}({\mathbb{T}})$ , where $g \in L^{2}({\mathbb{T}}) \backslash\{0\}$ and F驴驴. It is shown that many of the frame properties of ${\mathcal {E}}(g,\mathbb{Z}\backslash F)$ are affected by the cardinalities of F and the behavior of the zeros of g.