Resolvent Operator and Spectrum of New Type Boundary Value Problems       
Yazarlar (3)
Oktay Muhtaroğlu
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Doç. Dr. Hayati OLĞAR Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Kadriye Aydemir
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Filomat
Dergi ISSN 0354-5180 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q4
Makale Dili İngilizce
Basım Tarihi 01-2015
Cilt No 29
Sayı 7
Sayfalar 1671 / 1680
DOI Numarası 10.2298/FIL1507671M
Özet
The aim of this study is to investigate a new type boundary value problems which consist of the equation ̶ y˝00(x) + (By)(x) = λy(x) on two disjoint intervals (̶ 1; 0) and (0; 1) together with transmission conditions at the point of interaction x = 0 and with eigenparameter dependent boundary conditions, where B is an abstract linear operator, unbounded in general, in the direct sum of Lebesgue spaces L2(-1, 0)⊕L2(0, 1). By suggesting an own approaches we introduce modified Hilbert space and linear operator in it such a way that the considered problem can be interpreted as an eigenvalue problem of this operator. We establish such properties as isomorphism and coerciveness with respect to spectral parameter, maximal decreasing of the resolvent operator and discreteness of the spectrum. Further we examine asymptotic behaviour of the eigenvalues.
Anahtar Kelimeler
Boundary-value problems | Coerciveness | Eigenvalues | Resolvent | Spectrum | Transmission conditions