Weak eigenfunctions of two-interval Sturm-Liouville problems together with interaction conditions       
Yazarlar (2)
Doç. Dr. Hayati OLĞAR Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Oktay Muhtaroğlu
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Journal of Mathematical Physics
Dergi ISSN 0022-2488 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q3
Makale Dili İngilizce
Basım Tarihi 04-2017
Cilt No 58
Sayı 4
DOI Numarası 10.1063/1.4979615
Makale Linki http://aip.scitation.org/doi/10.1063/1.4979615
Özet
In this study, we consider a new type boundary value problem consisting of a Sturm-Liouville equation on two disjoint intervals together with interaction conditions and with eigenvalue parameter in the boundary conditions. We suggest a special technique to reduce the considered problem into an integral equation by the use of which we define a new concept, the so-called weak eigenfunction for the considered problem. Then we construct some Hilbert spaces and define some self-adjoint compact operators in these spaces in such a way that the considered problem can be interpreted as a self-adjoint operator-pencil equation. Finally, it is shown that the spectrum is discrete and the set of weak eigenfunctions form a Riesz basis of the suitable Hilbert space.
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