
Simple formulae for Lebesgue constants arising in the classical Fourier series approximation are obtained. Both even and odd cases are addressed, extending Fejér’s results. Asymptotic formulae are also obtained.
QA1-939, Lebesgue constant, Fourier series approximation, Dirichlet kernel, Mathematics
QA1-939, Lebesgue constant, Fourier series approximation, Dirichlet kernel, Mathematics
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