• Corpus ID: 13006792

Generalized Fourier-Bessel operator and almost-periodic interpolation and approximation

  title={Generalized Fourier-Bessel operator and almost-periodic interpolation and approximation},
  author={J. P. Gauthier and Dario Prandi},
We consider functions f of two real variables, given as trigonometric functions over a finite set F of frequencies. This set is assumed to be closed under rotations in the frequency plane of angle 2kπ M for some integer M. Firstly, we address the problem of evaluating these functions over a similar finite set E in the space plane and, secondly, we address the problems of interpolating or approximating a function g of two variables by such an f over the grid E. In particular, for this aim, we… 

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