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Existence and Uniqueness of Spaces of Splines of Maximal Pseudosmoothness


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Abstract

We consider gradation of pseudosmoothness of (in general, nonpolynomial) splines and find conditions under which the space of splines of maximal pseudosmoothness is unique on a given grid, possesses the embedding property on embedded grids, and satisfies the approximation relations. The proposed general scheme can be applied to splines generated by functions in spaces of integrable functions and in Sobolev spaces. The results are illustrated by some examples.

About the authors

Yu. K. Dem’yanovich

St. Petersburg State University

Author for correspondence.
Email: Yuri.Demjanovich@JD16531.spb.edu
Russian Federation, 28, Universitetskii pr., Petrodvorets, St. Petersburg, 198504

E. S. Kovtunenko

N. G. Kuznetsov Naval Academy

Email: Yuri.Demjanovich@JD16531.spb.edu
Russian Federation, 73/1, Vyborgskaya nab., St. Petersburg, 197045

T. A. Safonova

St. Petersburg State University

Email: Yuri.Demjanovich@JD16531.spb.edu
Russian Federation, 28, Universitetskii pr., Petrodvorets, St. Petersburg, 198504

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