Approximation of bandlimited functions by finite exponential sums
Authors:
S. Norvidas
Affiliation:
(1) Institute of Mathematics and Informatics, Akademijos 4, LT-08663 Vilnius, Lithuania
Abstract:
For a compact set K in ℝn, let B2K be the set of all functions f ∈ L2(ℝ2) bandlimited to K, i.e., such that the Fourier transform f̂ of f is supported by K. We investigate the question of approximation of f ∈ B2K by finite exponential sums