Abstract.
Let X be a Banach space and let A be a closed linear operator on X. It is shown that the abstract Cauchy problem
\( \dot{u}(t) + Au(t) = f(t),\; t > 0,\quad u(0) = 0, \)
enjoys maximal regularity in weighted L p -spaces with weights \( \omega(t) = t^{p(1-\mu)} \), where \( 1/p < \mu \), if and only if it has the property of maximal L p -regularity. Moreover, it is also shown that the derivation operator \( D = d/dt \) admits an \( {\cal H}^\infty \)-calculus in weighted L p -spaces.
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Received: 26 February 2003