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Inverses of generators of integrated fractional resolvent operator functions

  • Miao Li EMAIL logo , Javier Pastor and Sergey Piskarev
Published/Copyright: February 9, 2019

Abstract

This paper is devoted to the inverse generator problem in the setting of generators of integrated resolvent operator functions. It is shown that if the operator A is the generator of a tempered β-times integrated α-resolvent operator function ((α, β)-ROF) and it is injective, then the inverse operator A−1 is the generator of a tempered (α, γ)-ROF for all γ > β + 1/2, by means of an explicit representation of the integrated resolvent operator function based in Bessel functions of first kind. Analytic resolvent operator functions are also considered, showing that A−1 is in addition the generator of a tempered (δ, 0)-ROF for all δ < α. Moreover, the optimal decay rate of (α, β)-ROFs as t → ∞ is given. These result are applied to fractional Cauchy problem unsolved in the fractional derivative.

MSC 2010: 34A08; 47D06; 47D09; 47D62; 47D99

Acknowledgements

This work was done while the second author was visiting the Department of Mathematics of Sichuan University, supported by Universitat de València grant UV-INV_EPDI17-545952. He would like to thank the functional analysis group, and very specially Professor Miao Li, for their warm hospitality and support. The first author was supported by the NSFC-RFBR Programme of China (No. 11611530677). The third author was supported by the Russian Foundation for Basic Research, projects 15-01-00026_a, 16-01-00039_a and 17-51-53008.

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Received: 2017-11-30
Published Online: 2019-02-09
Published in Print: 2018-12-19

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