Strictly positive definite functions in Rd

被引：10

作者：

Castell, WZ

Filbir, F

Szwarc, R

机构：

[1] GSF, Inst Biomath & Biometry, Natl Res Ctr Environm & Hlth, D-85764 Neuherberg, Germany

[2] Univ Wroclaw, Inst Math, PL-50384 Wroclaw, Poland

来源：

JOURNAL OF APPROXIMATION THEORY | 2005年 / 137卷 / 02期

关键词：

strictly positive definite functions; linear independence of exponentials;

D O I：

10.1016/j.jat.2005.09.014

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

We give a sufficient condition for strictly positive definiteness in R-d. The result is based on the question how sparse subsets of R-d can be to guarantee linear independence of the exponentials. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：277 / 280

页数：4

共 4 条

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