It is shown that, under certain conditions, orthonormalising the positive integer shifts of an exponentially decaying function on the half line by the Gram Schmidt process leads to a limiting profile given by orthonormalising all their integer shifts on the whole line. These results derive from properties of Cholesky factorization of bi-infinite and semi-infinite matrices. An example is provided by the negative exponential function and conjectures are given, supported by numerical evidence, for the Gaussian and inverse multiquadric.
By: Tim N. T. Goodman (Univ. of Dundee, UK), Charles A. Micchelli, Giuseppe Rodriquez (Univ. of Cagliari, Italy) and Sebastiano Seatzu (Univ. of Cagliari, Italy)
Published in: RC20599 in 1996
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