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https://open.uns.ac.rs/handle/123456789/14557
Nаziv: | Convoluted C-cosine functions and semigroups. Relations with ultradistribution and hyperfunction sines | Аutоri: | Kostić M. Pilipović, Stevan |
Dаtum izdаvаnjа: | 15-феб-2008 | Čаsоpis: | Journal of Mathematical Analysis and Applications | Sažetak: | Convoluted C-cosine functions and semigroups in a Banach space setting extending the classes of fractionally integrated C-cosine functions and semigroups are systematically analyzed. Structural properties of such operator families are obtained. Relations between convoluted C-cosine functions and analytic convoluted C-semigroups, introduced and investigated in this paper are given through the convoluted version of the abstract Weierstrass formula which is also proved in the paper. Ultradistribution and hyperfunction sines are connected with analytic convoluted semigroups and ultradistribution semigroups. Several examples of operators generating convoluted cosine functions, (analytic) convoluted semigroups as well as hyperfunction and ultradistribution sines illustrate the abstract approach of the authors. As an application, it is proved that the polyharmonic operator Δ2n, n ∈ N, acting on L2 [0, π] with appropriate boundary conditions, generates an exponentially bounded Kn-convoluted cosine function, and consequently, an exponentially bounded analytic Kn + 1-convoluted semigroup of angle frac(π, 2), for suitable exponentially bounded kernels Kn and Kn + 1. © 2007 Elsevier Inc. All rights reserved. | URI: | https://open.uns.ac.rs/handle/123456789/14557 | ISSN: | 0022247X | DOI: | 10.1016/j.jmaa.2007.05.083 |
Nаlаzi sе u kоlеkciјаmа: | PMF Publikacije/Publications |
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