10.1007/s40096-021-00383-8

Inverse nodal problem for discontinuous Sturm–Liouville operator by new Prüfer Substitutions

  1. Department of Mathematics, Faculty of Science, Firat University, Elazig, 23119, TR
  2. Department of Mathematics, Faculty of Mathematical Sciences, University of Kashan, Kashan, 87317-53153, IR

Published in Issue 2021-02-17

How to Cite

Koyunbakan, H., & Mosazadeh, S. (2021). Inverse nodal problem for discontinuous Sturm–Liouville operator by new Prüfer Substitutions. Mathematical Sciences, 15(4 (December 2021). https://doi.org/10.1007/s40096-021-00383-8

Abstract

Abstract In the present paper, a boundary value problem consisting of a Sturm–Liouville equation with boundary conditions dependent on the eigenparameter and discontinuous conditions inside the interval is investigated. We present new Prüfer substitutions and obtain the asymptotic form of eigenvalues, nodal points and nodal lengths. Then, we prove the uniqueness theorem for the solution of the inverse nodal problem, present a constructive procedure for the potential function by using nodal lengths. Finally, we study Lipschitz stability for the inverse problem.

Keywords

  • Prüfer substitutions,
  • Discontinuous conditions,
  • Nodal points,
  • Inverse nodal problem,
  • Lipschitz stability

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