Browsing by Author "Nestoridis, Vassilis"
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Article
An extension of the disc algebra, II
Nestoridis, Vassilis; Papadatos, Nickos (2014)We identify the complex plane with the open unit disc by the homeomorphism. This leads to a compactification of, homeomorphic to. The Euclidean metric on induces a metric on. We identify all uniform limits of polynomials ...
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Article
Universal approximation by translates of fundamental solutions of elliptic equations
Nestoridis, Vassilis; Smyrlis, Yiorgos-Sokratis (2011)In the present work, we investigate the approximability of solutions of elliptic partial differential equations in a bounded domain ω by universal series of translates of fundamental solutions of the underlying partial ...
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Article
Universal series in ∩p>1ℓp
Koumandos, Stamatis; Nestoridis, Vassilis; Smyrlis, Yiorgos-Sokratis; Stefanopoulos, Vangelis (2010)In this paper an abstract condition is given yielding universal series defined by sequences a = {aj}∞ j=1 in ∩p>1ℓp but not in ℓ1. We obtain a unification of some known results related to approximation by translates of ...