functional calculus in real interpolation spaces, II
Tom 145 / 2001
Studia Mathematica 145 (2001), 75-83
MSC: 47A60, 46B70.
DOI: 10.4064/sm145-1-5
Streszczenie
Let A be a linear closed one-to-one operator in a complex Banach space X, having dense domain and dense range. If A is of type \omega (i.e.the spectrum of A is contained in a sector of angle 2\omega , symmetric about the real positive axis, and \| \lambda (\lambda I - A)^{-1}\| is bounded outside every larger sector), then A has a bounded H^\infty functional calculus in the real interpolation spaces between X and the intersection of the domain and the range of the operator itself.