ACTA issues

Generalized derivation and numerical range

S. Bouali, J. Charles

Acta Sci. Math. (Szeged) 63:3-4(1997), 563-570

Abstract. In this paper we study the situation in which the numerical range of the generalized derivation coincides with the convex hull of its spectrum. We also turn our attention to the range of the inner derivation.

AMS Subject Classification (1991): 47B47

Received November 4, 1996. (Registered under 5784/2009.)