ArticleOriginal scientific text

Title

On a generalization of Lumer-Phillips' theorem for dissipative operators in a Banach space

Authors 1

Affiliations

  1. Department of Mathematics and Computer Sciences, Faculty of Sciences, Kuwait University, P.O. Box 5969, Safat 13060, Kuwait

Abstract

Using [1], which is a local generalization of Gelfand's result for powerbounded operators, we first give a quantitative local extension of Lumer-Philips' result that states conditions under which a quasi-nilpotent dissipative operator vanishes. Secondly, we also improve Lumer-Phillips' theorem on strongly continuous semigroups of contraction operators.

Keywords

dissipative operators, local spectrum, semigroup of contraction operators

Bibliography

  1. B. Aupetit and D. Drissi, Some spectral inequalities involving generalized scalar operators, Studia Math. 109 (1994), 51-66.
  2. B. Aupetit and D. Drissi, Local spectrum theory and subharmonicity, Proc. Edinburgh Math. Soc. 39 (1996), 571-579)
  3. F. F. Bonsall and J. Duncan, Numerical Ranges I and II, London Math. Soc. Lecture Note Ser. 2 and 10, Cambridge Univ. Press, 1971 and 1973.
  4. I. Gelfand, Zur Theorie der Charaktere der Abelschen topologischen Gruppen, Mat. Sb. 9 (1941), 49-50.
  5. E. Hille, On the theory of characters of groups and semigroups in normed vector rings, Proc. Nat. Acad. Sci. U.S.A. 30 (1944), 58-60.
  6. E. Hille and R. S. Phillips, Functional Analysis and Semi-Groups, Amer. Math. Soc., Providence, 1957.
  7. G. Lumer and R. S. Phillips, Dissipative operators in Banach space, Pacific J. Math. 11 (1961), 679-698.
  8. J. Zemánek, On the Gelfand-Hille theorems, in: Banach Center Publ. 30, Inst. of Math., Polish Acad. Sci., 1994, 369-385.
Pages:
1-7
Main language of publication
English
Received
1996-02-20
Accepted
1996-09-24
Published
1998
Exact and natural sciences