Abstract
We give further regularity results with respect to (t, s) for the evolution operatorG(t, s) of abstract parabolic initial value problems in general Banach space. Such results are then used to establish a representation formula for the solutions of parabolic initial-boundary value problems with nonvanishing data at the boundary.
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Lunardi, A. Differentiability with respect to (t, s) of the parabolic evolution operator. Israel J. Math. 68, 161–184 (1989). https://doi.org/10.1007/BF02772659
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DOI: https://doi.org/10.1007/BF02772659