On the Fredholm Property of a Class of Convolution-Type Operators

A. G. Kamalyan, I. M. Spitkovsky

Research output: Contribution to journalArticlepeer-review


The notions of the L-convolution operator and the ℒ-Wiener–Hopf operator are introduced by replacing the Fourier transform in the definition of the convolution operator by a spectral transformation of the self-adjoint Sturm–Liouville operator on the axis ℒ. In the case of the zero potential, the introduced operators coincide with the convolution operator and theWiener–Hopf integral operator, respectively. A connection between the ℒ-Wiener–Hopf operator and singular integral operators is revealed. In the case of a piecewise continuous symbol, a criterion for the Fredholm property and a formula for the index of the ℒ-Wiener–Hopf operator in terms of the symbol and the elements of the scattering matrix of the operator ℒ are obtained.

Original languageEnglish (US)
Pages (from-to)404-416
Number of pages13
JournalMathematical Notes
Issue number3-4
StatePublished - Sep 1 2018


  • Fredholm property
  • singular integral operator
  • the operator L-Wiener–Hopf

ASJC Scopus subject areas

  • General Mathematics


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