Type: Article
Publication Date: 2021-01-30
Citations: 10
DOI: https://doi.org/10.1155/2021/6620625
The main aim of this paper is to indicate that the notion of semi- <math xmlns="http://www.w3.org/1998/Math/MathML" id="M2"><mi>c</mi></math> -periodicity is equivalent with the notion of <math xmlns="http://www.w3.org/1998/Math/MathML" id="M3"><mi>c</mi></math> -periodicity, provided that <math xmlns="http://www.w3.org/1998/Math/MathML" id="M4"><mi>c</mi></math> is a nonzero complex number whose absolute value is not equal to 1.