Mathematics – Functional Analysis
Scientific paper
2006-04-04
Constr. Approx. 12 (1996), 1--30
Mathematics
Functional Analysis
38 pages, AMS-TeX ("amsppt" document style)
Scientific paper
This paper introduces Fourier duality for a class of affine iterated function systems (IFS) T_i. These systems are determined by a finite family of contractive affine maps in R^d. Our Fourier duality applies to the resulting probability measure mu which is fixed by (T_i). When the IFS is given, the support of the associated mu is a compact set X in R^d, typically a fractal. Our Fourier duality refers to the Hilbert space L^2(X, mu): We show that under a certain unitarity condition involving a pair of affine iterated function systems (T_i) and (S_j) it is possible to recursively construct a Fourier bases in the Hilbert space L^2(X, mu) with the Fourier basis for one depending on the other.
Jorgensen Palle E. T.
Pedersen Steen
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