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Pointwise $$\left( H,\Phi \right) $$H,Φ Strong Approximation by Fourier Series of $$L^{1}$$L1 Integrable Functions

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We will present an estimation of the generalized strong mean $$\left( H,\Phi \right) $$H,Φ as an approximation version of the Totik type generalization of the results of J. Marcinkiewicz and… Click to show full abstract

We will present an estimation of the generalized strong mean $$\left( H,\Phi \right) $$H,Φ as an approximation version of the Totik type generalization of the results of J. Marcinkiewicz and A. Zygmund on strong summability of Fourier series of integrable functions. As a measure of such approximation we will use the function constructed by function $$\Psi $$Ψ complementary to $$ \Phi $$Φ on the base of definition of the Gabisoniya points. Some corollary and remark will also be given.

Keywords: series integrable; approximation; left phi; phi right; integrable functions; fourier series

Journal Title: Results in Mathematics
Year Published: 2018

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