Almost Periodicity of Bounded Solutions to Nonlinear Abstract Equations
The paper is devoted to the problem of Bohr-Neugebauer for the equations (1) and (2), in a Hilbert space H, i.e., providing conditions under which a bounded solution is necessarily almost periodic. The proofs of the main results are based on the solution of some differential inequalities, valid on the entire real axis. © 1984, Elsevier Science & Technology. All rights reserved.
North-Holland Mathematics Studies
Corduneanu, C., & Goldstein, J. (1984). Almost Periodicity of Bounded Solutions to Nonlinear Abstract Equations. North-Holland Mathematics Studies, 92 (C), 115-121. https://doi.org/10.1016/S0304-0208(08)73686-7