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Your search keyword '"SERTBAŞ, Meltem"' showing total 6 results
Start Over Author "SERTBAŞ, Meltem" Topic minimal and maximal operators
6 results on '"SERTBAŞ, Meltem"'

3. SINGULAR DEGENERATE NORMAL OPERATORS FOR FIRST-ORDER.

Author

YILMAZ, FATIH and SERTBAŞ, MELTEM

Subjects
*NORMAL operators, *HILBERT space, *LINEAR differential equations, *BOUNDARY value problems, *VECTORS (Calculus)
Abstract

In this paper, all normal extensions of the minimal operator associated with the singular degenerate linear differential expressions for first order in the Hilbert space of vector-functions are investigated in terms of boundary values. As well, it analyses the spectrum parts of any normal extension. [ABSTRACT FROM AUTHOR]

Published
2022
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4. Singular degenerate normal differential operators for first-order

Author

Yılmaz, Fatih, Sertbaş, Meltem, and Maltepe Üniversitesi, İnsan ve Toplum Bilimleri Fakültesi

Subjects
Degenarete differential operator, Formally normal and normal operator, Minimal and maximal operators, Extension, Spectrum of an operator
Abstract

In this work, all normal extensions of the minimal operator generated by degenerate linear differential expressions for first order with selfadjoint operator coefficients in the Hilbert space of Hilbert space valued functions defined in separated left-right semi-axises in terms of boundary values are investigated. Also, the spectrum structure of any normal extention is examineted.

Published
2019

5. Birinci Mertebeden Düzgün Katsayılı Maksimal Hiponormal Operatör Genişlemeleri.

Author

SERTBAŞ, Meltem

Subjects
*HILBERT functions, *FUNCTION spaces, *DIFFERENTIAL operators
Abstract

In this study, it is given all maximal hyponormal extensions of first-order with smooth operator coefficients in Hilbert valued function space on a finite interval. These extention is by means of boundary values.Also, the structure of the spectrum of the maximal hyponormal extensions is investigated. [ABSTRACT FROM AUTHOR]

Published
2019
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6. Degenerate maximal hyponormal differential operators for the first order.

Author

SERTBAŞ, Meltem and YILMAZ, Fatih

Subjects
*HYPONORMAL operators, *HILBERT space, *BOUNDARY value problems, *DIFFERENTIAL operators, *FIRST-order phase transitions
Abstract

In this study, all maximal hyponormal extensions are given for the degenerate first order in the Hilbert space of vector-functions on a finite interval. The extensions are defined in terms of the boundary values. The structure of the spectrum of the maximal hyponormal extensions is also investigated. [ABSTRACT FROM AUTHOR]

Published
2019
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