The unicity of best approximation in a space of compact operators

• Autores: Joanna Kowynia
• Localización: Mathematica scandinavica, ISSN 0025-5521, Vol. 108, Nº 1, 2011, págs. 146-160
• Idioma: inglés
• DOI: 10.7146/math.scand.a-15164
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• Resumen

  • Chebyshev subspaces of K(c0,c0) are studied. A k-dimensional non-interpolating Chebyshev subspace is constructed. The unicity of best approximation in non-Chebyshev subspaces is considered.