Pseudo-almost periodic and pseudo-almost automorphic solutions of class r under the light of measure theory. (English) Zbl 1356.34077
Summary: The aim of this work is to present a new approach to study weighted pseudo almost periodic and automorphic functions using measure theory. We present a new concept of weighted ergodic functions which is more general than the classical one. Then we establish many interesting results on the functional space of such functions. We study the existence and uniqueness of \((\mu,\nu)\)-pseudo almost periodic and automorphic solutions of class \(r\) for some neutral partial functional differential equations in a Banach space when the delay is distributed using the spectral decomposition of the phase space developed in Adimy and co-authors. Here we assume that the undelayed part is not necessarily densely defined and satisfies the well-known Hille-Yosida condition, the delayed part are assumed to be pseudo almost periodic with respect to the first argument and Lipschitz continuous with respect to the second argument.
MSC:
34K30 | Functional-differential equations in abstract spaces |
34K14 | Almost and pseudo-almost periodic solutions to functional-differential equations |
44A35 | Convolution as an integral transform |
47D06 | One-parameter semigroups and linear evolution equations |
43A60 | Almost periodic functions on groups and semigroups and their generalizations (recurrent functions, distal functions, etc.); almost automorphic functions |
35R10 | Partial functional-differential equations |