JournalszaaVol. 19, No. 1pp. 3–12

Geometry of Numerical Ranges in Locally mm-Convex *-Algebras

  • Th. Chryssakis

    University of Athens, Greece
Geometry of Numerical Ranges in Locally $m$-Convex *-Algebras cover
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Abstract

In this paper we examine the symmetry of numerical ranges in a unital locally mm-convex CC*- algebra of a given element and its adjoint, with respect to a rotated real-axis, where the rotation angle depends on the value of the positive linear forms of the algebra (states) at the unit clement of the algebra.

Cite this article

Th. Chryssakis, Geometry of Numerical Ranges in Locally mm-Convex *-Algebras. Z. Anal. Anwend. 19 (2000), no. 1, pp. 3–12

DOI 10.4171/ZAA/934