2011 | OriginalPaper | Buchkapitel
Perturbation Results for Multivalued Linear Operators
verfasst von : Ronald Cross, Angelo Favini, Yakov Yakubov
Erschienen in: Parabolic Problems
Verlag: Springer Basel
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We give some perturbation theorems for multivalued linear operators in a Banach space. Two different approaches are suggested: the resolvent approach and the modified resolvent approach. The results allow us to handle degenerate abstract Cauchy problems (inclusions). A very wide application of obtained abstract results to initial boundary value problems for degenerate parabolic (elliptic-parabolic) equations with lower-order terms is studied. In particular, integro-differential equations have been considered too.