Spectral properties of cosine operator functions |
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| Authors: | Ioana Cioranescu Carlos Lizama |
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| Affiliation: | (1) Depto. Matematica, Universidad de Santiago de Chile, Casilla 5659 Correo 2, Santiago de Chile, Republica de Chile |
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| Abstract: | LetA be the generator of a cosine functionCt,t  R in a Banach spaceX; we shall connect the existence and uniqueness of aT-periodic mild solution of the equationu = Au + f with the spectral property 1  (CT) and, in caseX is a Hilbert space, also with spectral properties ofA.This research was supported in part by DAAD, West Germany. |
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| Keywords: | Primary 34G10 47D05 |
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