• 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 ...
    • 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 ...
    • 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 ...