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Generators of C 0 ‐groups with smallest spectra
Author(s) -
Seferoglu H.
Publication year - 2007
Publication title -
mathematische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 50
eISSN - 1522-2616
pISSN - 0025-584X
DOI - 10.1002/mana.200410525
Subject(s) - mathematics , generator (circuit theory) , banach space , group (periodic table) , space (punctuation) , combinatorics , pure mathematics , discrete mathematics , chemistry , thermodynamics , computer science , physics , power (physics) , organic chemistry , operating system
Let T = { T ( t )} t ∈ℝ be a C 0 ‐group on a Banach space X with generator A . Under what conditions the assumption σ ( A ) = {0} implies that A = 0? This is called “ A = 0” problem. In this paper we present some results related to this problem. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)