Absolute summability by Riesz means

A New Factor Theorem on Absolute Riesz Summability

Absolute matrix summability methods

On Absolute Cesàro Summability

Summability of the l-1 Cesàro means of an integral transformation connected to a Riesz potential

Lp-summability of Riesz means for the sublaplacian on complex spheres

In this paper we study the L-convergence of the Riesz means S R(f) for the sublaplacian on the sphere S in the complex n-dimensional space C. We show that S R(f) converges to f in L (S) when δ > δ(p) := (2n− 1)| 2 − 1 p |. The index δ(p) improves the one found by Alexopoulos and Lohoué [AL], 2n| 1 2 − 1 p |, and it coincides with the one found by Mauceri [Ma] and, with different methods, by Mül...