Riesz mean
= Riesz mean
{wiki=Riesz_mean}
The term "Riesz mean" refers to a concept in mathematical analysis, specifically in the study of summability and convergence of series or functions. It is named after the Hungarian mathematician Frigyes Riesz. The Riesz mean is a way to assign a value to a divergent series or to improve the convergence properties of a series. It can be viewed as a generalization of the concept of taking limits.