Global classical solutions of coagulation-fragmentation equations with unbounded coagulation rates |
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Authors: | Jacek Banasiak |
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Affiliation: | School of Mathematical Sciences, University of KwaZulu-Natal, Durban 4041, South Africa Instytut Matematyki Politechniki ?ódzkiej, ?ód?, Poland |
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Abstract: | We study discrete fragmentation coagulation equations in spaces Xp, p>1, consisting of distributions having the pth moments finite. We show that for sufficiently regular fragmentation laws the fragmentation semigroup is analytic in Xp, and fully characterize the domain of its generator. This allows for explicit characterization of the domains of the fractional powers of the generator through real interpolation. Finally, we use the linear results to show the existence of global classical solutions to fragmentation coagulation equations for a class of unbounded coagulation kernels. |
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Keywords: | Fragmentation coagulation equation Analytic semigroups Positive solutions Unbounded semilinear perturbations Fractional powers of operators Real interpolations Moments estimates Substochastic semigroups |
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