17 citations · 43 across the 38 of their papers we have counts for
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math.CA2010★ 1 cited
Shapiro's Theorem for subspaces
J. M. Almira, T. Oikhberg
In a previous paper (see arXiv:1003.3411 [math.CA]), we investigated the existence of an element x of a quasi-Banach space X whose errors of best approximation by a given approxima…
math.CA2010
A lethargy result for real analytic functions
J. M. Almira
In this short note we prove that, if (C[a,b],{A_n}) is an approximation scheme and (A_n) satisfies de La Vallée-Poussin Theorem, there are instances of continuous functions on [a,b…
math.CA2010★ 3 cited
Approximation schemes satisfying Shapiro's Theorem
J. M. Almira, T. Oikhberg
An approximation scheme is a family of homogeneous subsets of a quasi-Banach space , such that , $A_n + A_n \subset A_{K(…