Operator-pencil treatment of multi-interval Sturm-Liouville equation with boundary-transmission conditions       
Yazarlar (3)
Doç. Dr. Hayati OLĞAR Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Fahreddin Muhtarov
Azerbaijan National Academy Of Sciences, Azerbaycan
Oktay Muhtaroğlu
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale
Makale Alt Türü ESCI dergilerinde yayınlanan tam makale
Dergi Adı Bulletin of the Karaganda University Mathematics Series
Dergi ISSN 2518-7929 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler Emerging Sources Citation Index
Makale Dili Türkçe
Basım Tarihi 09-2024
Cilt No 115
Sayı 3
Sayfalar 126 / 136
DOI Numarası 10.31489/2024m3/126-136
Makale Linki https://doi.org/10.31489/2024m3/126-136
Özet
This paper is devoted to a new type of boundary-value problems for Sturm-Liouville equations defined on three disjoint intervals (−π,−π + d),(−π + d,π − d) and (π − d,π) together with eigenparameter dependent boundary conditions and with additional transmission conditions specified at the common end points −π + d and π − d, where 0 < d < π. The considered problem cannot be treated by known techniques within the usual framework of classical Sturm-Liouville theory. To establish some important spectral characteristics we introduced the polynomial-operator formulation of the problem. Moreover, we develop a new modification of the Rayleigh method to obtain lower bound of eigenvalues.
Anahtar Kelimeler
boundary-value-transmission problems | eigenvalues | generalized eigenfunctions | lower bound estimation | Rayleigh’s method | transmission conditions