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Approximation in weighted generalized grand Lebesgue spaces

Volume 143 / 2016

Daniyal M. Israfilov, Ahmet Testici Colloquium Mathematicum 143 (2016), 113-126 MSC: Primary 41A10, 41A30; Secondary 42A10. DOI: 10.4064/cm6555-12-2015 Published online: 3 December 2015


The direct and inverse problems of approximation theory in the subspace of weighted generalized grand Lebesgue spaces of $2\pi $-periodic functions with the weights satisfying Muckenhoupt's condition are investigated. Appropriate direct and inverse theorems are proved. As a corollary some results on constructive characterization problems in generalized Lipschitz classes are presented.


  • Daniyal M. IsrafilovDepartment of Mathematics
    Balikesir University
    Balikesir, Turkey
    Institute of Mathematics and Mechanics of ANAS
    Baku, Azerbaijan
  • Ahmet TesticiDepartment of Mathematics
    Balikesir University
    Balikesir Turkey

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