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Article

Variational Estimation Methods for Sturm–Liouville Problems

by
Elena Corina Cipu
1,2,* and
Cosmin Dănuţ Barbu
1
1
Department of Applied Mathematics, University Politehnica of Bucharest, Spl. Independentei, No. 313, RO-060042 Bucharest, Romania
2
CiTi, Faculty of Applied Sciences, University Politehnica of Bucharest, Spl. Independentei, No. 313, RO-060042 Bucharest, Romania
*
Author to whom correspondence should be addressed.
Mathematics 2022, 10(20), 3728; https://doi.org/10.3390/math10203728
Submission received: 31 July 2022 / Revised: 28 September 2022 / Accepted: 7 October 2022 / Published: 11 October 2022
(This article belongs to the Special Issue Variational Problems and Applications)

Abstract

In this paper, we are concerned with approach solutions for Sturm–Liouville problems (SLP) using variational problem (VP) formulation of regular SLP. The minimization problem (MP) is also set forth, and the connection between the solution of each formulation is then proved. Variational estimations (the variational equation associated through the Euler–Lagrange variational principle and Nehari’s method, shooting method and bisection method) and iterative variational methods (He’s method and HPM) for regular RSL are unitary presented in final part of the paper, which ends with applications.
Keywords: BVP nonlinear problems; variational methods; estimating nonlinearities; Green function BVP nonlinear problems; variational methods; estimating nonlinearities; Green function

Share and Cite

MDPI and ACS Style

Cipu, E.C.; Barbu, C.D. Variational Estimation Methods for Sturm–Liouville Problems. Mathematics 2022, 10, 3728. https://doi.org/10.3390/math10203728

AMA Style

Cipu EC, Barbu CD. Variational Estimation Methods for Sturm–Liouville Problems. Mathematics. 2022; 10(20):3728. https://doi.org/10.3390/math10203728

Chicago/Turabian Style

Cipu, Elena Corina, and Cosmin Dănuţ Barbu. 2022. "Variational Estimation Methods for Sturm–Liouville Problems" Mathematics 10, no. 20: 3728. https://doi.org/10.3390/math10203728

APA Style

Cipu, E. C., & Barbu, C. D. (2022). Variational Estimation Methods for Sturm–Liouville Problems. Mathematics, 10(20), 3728. https://doi.org/10.3390/math10203728

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