Reconstruction of Paley-Wiener functions on the Heisenberg group

Details Reconstruction of Paley-Wiener functions on the Heisenberg group Reconstruction of Paley-Wiener functions on the Heisenberg group

2011-08-29

arxiv.org/abs/1108.5628v1

Voronezh Winter Mathematical Schools, 207-216, Amer. Math. Soc. Transl. Ser. 2, 184, Amer. Math. Soc., Providence, RI, 1998

Mathematics

Functional Analysis

Scientific paper

Let $M$ be a Riemmanian manifold with bounded geometry. We consider a generalization of Paley-Wiener functions and Lagrangian splines on $M$. An analog of the Paley-Wiener theorem is given. We also show that every Paley-Wiener function on a manifold is uniquely determined by its values on some discrete sets of points. The main result of the paper is a generalization of the Whittaker-Shannon formula for reconstruction of a Paley-Wiener function from its values on a discrete set. It is shown that every Paley- Wiener function on $M$ is a limit of some linear combinations of fundamental solutions of the powers of the Laplace-Beltrami operator. The result is new even in the one-dimentional case.

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