Constructing an Element of a Banach Space with Given Deviation from its Nested Subspaces

DOI10.22034/kjm.2018.55158zbMath1412.41011arXiv1605.04592OpenAlexW2963794467MaRDI QIDQ4627979

Qidi Peng, Asuman Güven Aksoy

Publication date: 5 March 2019

Full work available at URL: https://arxiv.org/abs/1605.04592

zbMATH Keywords

Hahn-Banach theoremBanach spacebest approximationBernstein's lethargy theorem

Mathematics Subject Classification ID

Best approximation, Chebyshev systems (41A50) Geometry and structure of normed linear spaces (46B20) Rate of convergence, degree of approximation (41A25)

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