Mathematics – Functional Analysis
Scientific paper
2009-10-05
Mathematics
Functional Analysis
21 pages, to appear in Matematische Annalen
Scientific paper
We characterize the polynomial decay of orbits of Hilbert space $C_0$-semigroups in resolvent terms. We also show that results of the same type for general Banach space semigroups and functions obtained recently in the paper by C.J.K.Batty and T.Duyckaerts, Non-uniform stability for bounded semi-groups on Banach spaces (J. Evol. Eq. 2008), are sharp. This settles a conjecture posed in the paper by C.J.K.Batty and T.Duyckaerts.
Borichev Alexander
Tomilov Yuri
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