Generalized vector valued almost periodic and ergodic distributions |
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Authors: | Bolis Basit,Hans Gü nzler |
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Affiliation: | a School of Mathematical Sciences, Building 28M, Monash University, Victoria 3800, Australia b Mathematisches Seminar, University of Kiel, Ludewig-Meyn-Str., 24098 Kiel, Germany |
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Abstract: | Schwartz's almost periodic distributions are generalized to the case of Banach space valued distributions , and furthermore for a given arbitrary class A to for φ∈ test functions D(R,C)}. It is shown that this extension process is iteration complete, i.e. . Moreover the T from are characterized in various ways, also tempered distributions with P={X-valued functions of polynomial growth} are shown. Under suitable assumptions , , where for all h>0}, is defined with the corresponding extension of Mh. With an extension of the indefinite integral from to D′(R,X) a distribution analogue to the Bohl-Bohr-Amerio-Kadets theorem on the almost periodicity of bounded indefinite integrals of almost periodic functions is obtained, also for almost automorphic, Levitan almost periodic and recurrent functions, similar for a result of Levitan concerning ergodic indefinite integrals. For many of the above results a new (Δ)-condition is needed, we show that it holds for most of the A needed in applications. Also an application to the study of asymptotic behavior of distribution solutions of neutral integro-differential-difference systems is given. |
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Keywords: | Distribution classes Almost periodic Almost automorphic Ergodic Mean classes Generalized almost periodic distributions Primitive of distributions Difference-differential systems |
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