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Interpolation by cubic tension splines with convexity inheritance Full article

Journal Eurasian Journal of Mathematical and Computer Applications
ISSN: 2306-6172 , E-ISSN: 2308-9822
Output data Year: 2025, Volume: 13, Number: 1, Pages: 37-49 Pages count : 13 DOI: 10.32523/2306-6172-2025-13-1-37-49
Tags convex interpolation, cubic tension spline, algorithm, sufficient conditions of convexity
Authors Bogdanov V.V. 1 , Volkov Yu.S. 1
Affiliations
1 Sobolev Institute of Mathematics SB RAS

Funding (1)

1 Sobolev Institute of Mathematics FWNF-2022-0015

Abstract: We consider the problem of interpolation of a convex function by tension splines with inheritance of the convexity condition. Previously, we developed the near-optimal algorithm for automatically selecting tension parameters when interpolating a convex function; now we propose to use it in the problem of piecewise convex interpolation. Using numerical examples, we show that tension parameters determined on subdomains when constructing separate splines can be used in a global tension spline construction over all data, which ensures the required convexity on subdomains.
Cite: Bogdanov V.V. , Volkov Y.S.
Interpolation by cubic tension splines with convexity inheritance
Eurasian Journal of Mathematical and Computer Applications. 2025. V.13. N1. P.37-49. DOI: 10.32523/2306-6172-2025-13-1-37-49 WOS Scopus OpenAlex
Dates:
Submitted: Jun 12, 2024
Accepted: Sep 13, 2024
Published print: Mar 31, 2025
Published online: Mar 31, 2025
Identifiers:
Web of science: WOS:001459853500004
Scopus: 2-s2.0-105003319691
OpenAlex: W4409188318
Citing: Пока нет цитирований
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