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Influence of service quality on performance of hotel industry in Busia town, Kenya
(International Journal of Industrial Engineering, 2017-07-08)
Over the last decade, strategy as practice has generated a substantial knowledge about different aspects, forms and implications of strategizing activities and practices. This study focused mainly on this components and ...
On local minimum and orthogonality of normal derivations in Cp-classes
(G.I publications, 2017-02)
The present paper gives some results on local minimum and orthogonality of normal derivations in Cp-Classes. We employ some techniques for normal derivations due to Mecheri, Hacene, Bounkhel and Anderson. Let CpCp be normal, ...
On numerical ranges of convexoid operators
(G.I publications, 2017-02)
Numerical range is useful in studying operators on Hilbert spaces. In particular, the geometrical properties of numerical range often provide useful information about algebraic and analytic properties of an operator. The ...
On the similarities in properties of essential numerical range and Davis-Wielandt shell of Hilbert space operators
(International Journal of Innovative Research and Advanced Studies (IJIRAS), 2017-07)
Let be an operator on an infinite dimensional Hilbert space . Denote the essential numerical range of the operator by and the Davis-Wielandt shell of the operator by . We review the properties of the essential numerical ...
Generalizations on normal self-ad joint operators
(JGRMA, 2017-09)
We consider certain properties of operators. A lot of studies have been done on reflexivity, compactness and numerical radius attainability on Hilbert space operators [1-12] and the reference therein.
Characterization of norm inequalities for elementary operators
(International Journal of Modern Science and Technology, 2017)
Studies on the norms of the elementary operators on JB* -algebras Prime C * -algebras, Calkin algebras and standard operator algebras has been considered. In this paper, we characterize norm inequalities for Jordan elementary ...
New conditions for counteractivity of normality operators
(2017-08)
An interesting area in operator theory is the study of norm inequalities for Hilbert space operators. Many
mathematicians have worked on this subject, for example in [2, 3 and 5]. On the other hand, contractive
and ...
New conditions for contractivity of normaloid operators
(Journal of Global Research in Mathematical Archives, 2017-08)
In this paper we establish new conditions for contractivity of normaloid operators. We employ some results for contractivity due to Furuta, Nakomoto, Arandelovic and Dragomir. A particular generalization is also given.
Norm bounds for contractive normality operators
(2017-08)
In this paper we establish the upper and lower norm estimates of contractive normaloid operators using inner product,
Schwarz inequality for non-negative real numbers and some operator inequalities.