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pro vyhledávání: '"positive-definite continuation"'
Akademický článek
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We consider the problem of positive-semidefinite continuation: extending a partially specified covariance kernel from a subdomain $\Omega$ of a rectangular domain $I\times I$ to a covariance kernel on the entire domain $I\times I$. For a broad class
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ba3b207e198bad821af857f083e9ff9
Publikováno v:
Transactions of the American Mathematical Society; Jan2018, Vol. 370 Issue 1, p1-25, 25p
The main object under consideration is a class $\Phi_n\backslash\Phi_{n+1}$ of radial positive definite functions on $\R^n$ which do not admit \emph{radial positive definite continuation} on $\R^{n+1}$. We find certain necessary and sufficient condit
Externí odkaz:
http://arxiv.org/abs/1502.07179
Autor:
Padmanabhan, T.
Publikováno v:
General Relativity & Gravitation; Dec2002, Vol. 34 Issue 12, p2029, 7p
The main object under consideration is a class $\Phi_n\backslash\Phi_{n+1}$ of radial positive definite functions on $\R^n$ which do not admit \emph{radial positive definite continuation} on $\R^{n+1}$. We find certain necessary and sufficient condit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d34e0cdac59a6018367529058c25493
http://arxiv.org/abs/1502.07179
http://arxiv.org/abs/1502.07179
Autor:
V. P. Potapov, Irina V. Mikhailova
Publikováno v:
Topics in Interpolation Theory ISBN: 9783034898386
Let s(x) be a continuous function on (-a, a) such that (i) s(x) = s(-x) for -a 0, then there exists a neighborhood of 0 such that s(x) is positive definite in this neighborhood and admits more than one positive definite continuation from this neighbo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59306945f27e76deec15df2d288521b7
https://doi.org/10.1007/978-3-0348-8944-5_20
https://doi.org/10.1007/978-3-0348-8944-5_20
Autor:
Zoltán Sasvári
In a certain sense characteristic functions and correlation functions are the same, the common underlying concept is positive definiteness. Many results in probability theory, mathematical statistics and stochastic processes can be derived by using t
Autor:
Wolfgang Arendt, Joseph A. Ball, Jussi Behrndt, Karl-Heinz Förster, Volker Mehrmann, Carsten Trunk
The present volume contains a collection of original research articles and expository contributions on recent developments in operator theory and its multifaceted applications. They cover a wide range of themes from the IWOTA 2010 conference held at
About one half of the papers in this volume are based on lectures which were pre sented at a conference at Leipzig University in August 1994, which was dedicated to Vladimir Petrovich Potapov. He would have been eighty years old. These have been su