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Haar and Walsh Fourier series of Perron integrable functions. (English) Zbl 0353.42011

MSC:

42C10 Fourier series in special orthogonal functions (Legendre polynomials, Walsh functions, etc.)
28A20 Measurable and nonmeasurable functions, sequences of measurable functions, modes of convergence
33C45 Orthogonal polynomials and functions of hypergeometric type (Jacobi, Laguerre, Hermite, Askey scheme, etc.)
40A99 Convergence and divergence of infinite limiting processes
42C15 General harmonic expansions, frames
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