Bernuau spline wavelets and Sturmian sequences

Details Bernuau spline wavelets and Sturmian sequences Bernuau spline wavelets and Sturmian sequences

2003-09-24

arxiv.org/abs/math-ph/0309054v1

Physics

Mathematical Physics

41 pages,10 figures

Scientific paper

A spline wavelets construction of class C^n(R) supported by sequences of aperiodic discretizations of R is presented. The construction is based on multiresolution analysis recently elaborated by G. Bernuau. At a given scale, we consider discretizations that are sets of left-hand ends of tiles in a self-similar tiling of the real line with finite local complexity. Corresponding tilings are determined by two-letter Sturmian substitution sequences. We illustrate the construction with examples having quadratic Pisot-Vijayaraghavan units (like tau = (1 + sqrt{5})/2 or tau^2 = (3 + sqrt{5})/2) as scaling factor. In particular, we present a comprehensive analysis of the Fibonacci chain and give the analytic form of related scaling functions and wavelets as splines of second order. We also give some hints for the construction of multidimensional spline wavelets based on stone-inflation tilings in arbitrary dimension.

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