JournalspmVol. 64, No. 1pp. 11–19

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.

Cite this article

A. K. Gaur, Spectra in Banach and locally convex algebras. Port. Math. 64 (2007), no. 1, pp. 11–19

DOI 10.4171/PM/1773