Two notes on eventually differentiable families of operators
Tomáš Bárta (2010)
Commentationes Mathematicae Universitatis Carolinae
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In the first note we show for a strongly continuous family of operators that if every orbit is differentiable for , then all orbits are differentiable for with independent of . In the second note we give an example of an eventually differentiable semigroup which is not differentiable on the same interval in the operator norm topology.