A. Fotiadis

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20132025

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Showing 2019Show all

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math.FA2019

Riesz means on symmetric spaces

Anestis Fotiadis, Effie Papageorgiou

Let $X$ be a non-compact symmetric space of dimension $n$ . We prove that if $f \in L^{p} (X)$ , $1 \leq p \leq 2$ , then the Riesz means $S_{R}^{z} (f)$ converge to $f$ almost…

math.DG2019

Beltrami equation for the harmonic diffeomorphisms between surfaces

Anestis Fotiadis, Costas Daskaloyannis

In this article it is shown that the study of harmonic diffeomorphisms, with nonvanishing Hopf differential, reduces to the study of the Beltrami equation of a certain type: the im…