- 07-265 Valentin A.Zagrebnov
- Quasi-Sectorial Contractions
(41K, LaTeX 2e with 1 PS figure)
Nov 6, 07
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Abstract. We revise the notion of the quasi-sectorial contractions.
Our main theorem establishes a relation between semigroups of quasi-sectorial contractions and
a class of m-sectorial generators. We discuss a relevance of this kind of contractions to
the theory of operator-norm approximations of strongly continuous semigroups.