On the Extremal Rays of the Cone of Positive, Positive Definite Functions
نویسندگان
چکیده
منابع مشابه
On the Extremal Rays of the Cone of Positive, Positive Definite Functions
The aim of this paper is to investigate the cone of non-negative, radial, positivedefinite functions in the set of continuous functions on R. Elements of this cone admit a Choquet integral representation in terms of the extremals. The main feature of this article is to characterize some large classes of such extremals. In particular, we show that there many other extremals than the gaussians, t...
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ژورنال
عنوان ژورنال: Journal of Fourier Analysis and Applications
سال: 2009
ISSN: 1069-5869,1531-5851
DOI: 10.1007/s00041-008-9057-6