We provide new variational settings to study the a.p. (almost periodic)
solutions of a class of nonlinear neutral delay equations. We extend
Shu and Xu (2006) variational setting for
periodic solutions of nonlinear neutral delay equation to the almost periodic settings. We obtain
results on the structure of the set of the a.p. solutions, results of existence of a.p. solutions,
results of existence of a.p. solutions, and also a density result for the forced
equations.
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