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Hartman, P. (2002) Ordinary Differential Equations. Second Edition, SIAM, Philadelphia, Pennsylvania, United States.
http://dx.doi.org/10.1137/1.9780898719222.fm

has been cited by the following article:

• TITLE: Matrices Associated with Moving Least-Squares Approximation and Corresponding Inequalities

  AUTHORS: Svetoslav Nenov, Tsvetelin Tsvetkov

  KEYWORDS: Moving Least-Squares Approximation, Singular-Values

  JOURNAL NAME: Advances in Pure Mathematics, Vol.5 No.14, December 28, 2015

  ABSTRACT: In this article, some properties of matrices of moving least-squares approximation have been proven. The used technique is based on known inequalities for singular-values of matrices. Some inequalities for the norm of coefficients-vector of the linear approximation have been proven.