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zbMath0774.41025MaRDI QIDQ4028740

Werner Haussmann, L. Wehrend, K. L. Zeller

Publication date: 28 March 1993

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

Hahn-Banach theorem harmonic function polyharmonic functions best \(L^ 1\) approximations

Mathematics Subject Classification ID

Best approximation, Chebyshev systems (41A50) Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65)

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