Национални Репозиторијум Дисертација у Србији
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  •   НаРДуС - почетна
  • Универзитет у Нишу
  • Природно-математички факултет
  • Преглед дисертације
  •   НаРДуС - почетна
  • Универзитет у Нишу
  • Природно-математички факултет
  • Преглед дисертације
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Coherent and precoherent operators

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Disertacija.pdf (4.135Mb)
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Докторанд
Đikić, Marko S.
Ментор
Đorđević, Dragan
Чланови комисије
Rakočević, Vladimir
Pilipovic, Stevan
Živković-Zlatanović, Snežana
Метаподаци
Приказ свих података о дисертацији
Сажетак
In this thesis we introduce and investigate new classes of operators which we call coherent and precoherent operators. These operators appear as solutions of some problems in the literature, but they also represent a generalization of some frequently studied classes of operators. After we study different properties of these new classes, we continue by considering a few interesting problems in operator theory. We consider problems about the Moore-Penrose inverse and arbitrary reflexive inverse of the sum of operators, range additivity of operators, lattice properties of the star and core partial orders on Hilbert space operators, the connection about the parallel sum of operators and their infimum in different partial orders, and one special type of operators, inspired by recently introduced disjoint range operators. Accordingly, we generalize and improve a number of results from the existing literature. One part of the thesis is dedicated to Rickart *-rings and generaliza...tions of some presented results in the algebraic setting. We included a number of examples in order to demonstrate our statements and their possible extent: reduction of conditions, proving opposite directions, etc. In the end, we propose few problems for further research on these topics.

Факултет:
Универзитет у Нишу, Природно-математички факултет
Датум одбране:
13-12-2016
Кључне речи:
Koherentni operatori / Coherent operators / Precoherent operators / Generalized inverses / Partial orders / Parallel sum / Range additivity / Prekoherentni operatori / Generalisani inverzi / Parcijalna uređenja / Paralelna suma / Aditivnost slika
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_nardus_7817
Остали линкови:
http://eteze.ni.ac.rs/application/showtheses?thesesId=4713
https://nardus.mpn.gov.rs/handle/123456789/7817
https://fedorani.ni.ac.rs/fedora/get/o:1289/bdef:Content/download
http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70052&RID=1025419753

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