In this article we give the definition and some properties of unbounded almost periodic functions in Hausdorff metric. Moreover, we examine almost periodicity of the inverse of a generalized trigonometric polynomial of constant sign.
In this article we prove a sufficient condition for the primitive function of a uniformly almost periodic function to be Bohr almost periodic.
In this note we present the definition, examples and some properties of quasi N-almost periodic functions, i. e. certain almost periodic functions in the sense of Levitan.
This paper presents some remarks on various types of the almost periodicity of a generalized trigonometric polynomial and of the inverse of a generalized trigonometric polynomial of constant sign.
In this note we present some theorems on the superposition of an -almost periodic (a.p. for short) function, a -a.p. function and an -a.p. function. Moreover, we prove a theorem on the bounded primary function of an -a.p. function. Finally, we prove that the inverse of a -a.p. function is -a.p.
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