JournalspmVol. 64 / No. 1DOI 10.4171/pm/1773

Spectra in Banach and locally convex algebras

  • A. K. Gaur

    Duquesne University, Pittsburgh, United States
Spectra in Banach and locally convex algebras cover

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Abstract

We present a counterexample to the converse of results on approximate point spectra. A norm inequality in terms of a distance function is established for a quotient bounded operator on a locally convex Hausdorff space on the set of complex numbers.