Abstract
Let \((T(t))_{t\ge 0}\) be a \(C_0\) semigroup on a Banach space X with infinitesimal generator A. In this work, we give conditions for which the spectral mapping theorem \(\sigma _{*}(T(t))\backslash \{0\}=\{e^{\lambda s}, \lambda \in \sigma _{*}(A)\}\) holds, where \(\sigma _*\) can be equal to the essential, Browder and Kato spectrum. Also, we will be interested in the relations between the spectrum of A and the spectrum of the \(n^{th}\) derivative \(T(t)^{(n)}\) of a differentiable \(C_0\) semigroup \((T(t))_{t\ge 0}\).
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Boua, H., Karmouni, M. & Tajmouati, A. Spectral mapping theorems for differentiable \(C_0\) semigroups. Rend. Circ. Mat. Palermo, II. Ser 70, 23–30 (2021). https://doi.org/10.1007/s12215-020-00480-y
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DOI: https://doi.org/10.1007/s12215-020-00480-y