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1: Paper Source PDF document

Paper's Title:

Some Functional Inequalities for the Geometric Operator Mean

Author(s):

Mustapha Raissouli

Taibah University, Faculty of Sciences, Department of Mathematics,
Al Madinah Al Munawwarah, P.O.Box 30097,
Kingdom of Saudi Arabia.

raissouli_10@hotmail.com

Abstract:

In this paper, we give some new inequalities of functional type for the power geometric operator mean involving several arguments.



1: Paper Source PDF document

Paper's Title:

Lower and Upper Bounds for the Point-Wise Directional Derivative of the Fenchel Duality Map

Author(s):

M. Raissouli1,2, M. Ramezani3

1Department of Mathematics,
Science Faculty, Taibah University,
P.O. Box 30097, Zip Code 41477, Al Madinah Al Munawwarah,
Saudi Arabia.

2Department of Mathematics,
Science Faculty, Moulay Ismail University, Meknes,
Morocco.
E-mail: raissouli.mustapha@gmail.com
 

3Department of Mathematics,
University of Bojnord, Bojnord,
Iran.
E-mail: m.ramezani@ub.ac.ir

Abstract:

In this paper, we introduce the point-wise directional derivative of the Fenchel duality map and we study its properties. The best lower and upper bounds of this point-wise directional derivative are also given. We explain how our functional results contain those related to the positive bounded linear operators.


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