Browsing by Author "Ismailov, Zameddin İ."

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    Multipoint selfadjoint quasi-differential operators for first order
    (Ankara Üniversitesi Fen Fakültesi, 2019-02-01) Yılmaz, Bülent; Mert, Rukiye Öztürk; Ismailov, Zameddin İ.; Fizik; Fen Fakültesi
    In the present paper, the aim is to described all selfadjoint extensions of the minimal operator generated by first order linear symmetric multipoint quasi-differential operator expression in the direct sum of weighted Hilbert spaces of vector-functions defined at the semi-infinite intervals by using the Calkin-Gorbachuk method. We have also examine the structure of the spectrum of such extensions.