Article Dans Une Revue Monatshefte für Mathematik Année : 2016

Generalized universal series

Résumé

We unify the recently developed abstract theories of universal series and extended universal series to include sums of the form \sum_k ak x_n,k for given sequences of vectors (x_n,k)n≥k≥0 in a topological vector space X. The algebraic and topological genericity as well as the spaceability are discussed. Then we provide various examples of such generalized universal series which do not proceed from the classical theory. In particular, we build universal series involving Bernstein's polynomials, we obtain a universal series version of MacLane's Theorem, and we extend a result of Tsirivas concerning universal Taylor series on simply connected domains, exploiting Bernstein- Walsh quantitative approximation theorem.

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hal-00925108 , version 1 (07-01-2014)

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Stéphane Charpentier, Augustin Mouze, Vincent Munnier. Generalized universal series. Monatshefte für Mathematik, 2016, 179 (1), ⟨10.1007/s00605-015-0764-1⟩. ⟨hal-00925108⟩
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