Journal of Operator Theory

Volume 10, Issue 1, Summer 1983 pp. 87-94.

The spectrum of Hilbert space semigroups

Authors: I. Herbst
Author institution:Department of Mathematics, University of Virginia, Charlottesville, Virginia 22903, U.S.A. Current address: Institut Mittag-Leffler, Auravägen 17, S-182 62 Djursholm, Sweden.

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