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On Tchebycheff polynomials on disjoint inter
Best approximation in Lipschitz spaces
Haar and Walsh series and martingales
11 other sections not shown
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ALFRED HAAR ALFRED HAAR MEMORIAL algebra algorithm arbitrary Banach space best approximation bounded Budapest BUDAPEST HUNGARY Chebyshev coefficients COLLOQUIA MATHEMATICA SOCIETATIS compute condition constant continuous convex convolution COROLLARY corresponding defined definition denote derivative differential dimensional direct sum discrete domain dyadic ergodic exists finite func function f G space group G group representations Haar functions Haar measure HAAR MEMORIAL CONFERENCE harmonic analysis Hence Hilbert space holds homogeneous HUNGARY inequality integral interpolation interval invariant measure JANOS BOLYAI JANOS BOLYAI 49 kernel Lemma Let G Lie group linear locally compact group mapping martingale Math MATHEMATICA SOCIETATIS JANOS Mathematics metric modular forms monosplines norm obtain orthogonal polynomials problem PROOF OF THEOREM prove proximinal publication elsewhere resp respect result satisfies semigroup sequence SOCIETATIS JANOS BOLYAI spline subgroup subset subspace tion topological transform trigonometric unique unitary representation Univ variables Walsh functions zero