Orthonormal bases of exponentials for the n-cube
@article{Lagarias2000OrthonormalBO, title={Orthonormal bases of exponentials for the n-cube}, author={J. C. Lagarias and J. Reeds and Y. Wang}, journal={Duke Mathematical Journal}, year={2000}, volume={103}, pages={25-37} }
Any set that gives such an orthogonal basis is called a spectrum for . Only very special sets in R are spectral sets. However, when a spectrum exists, it can be viewed as a generalization of Fourier series, because for the n-cube = [0,1]n the spectrum = Z gives the standard Fourier basis of L2([0,1]n). The main object of this paper is to relate the spectra of sets to tilings in Fourier space. We develop such a relation for a large class of sets and apply it to geometrically characterize all… CONTINUE READING
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