Results 1 to 10 of about 127 (43)

Composite convex functions

open access: yesJournal of Mathematical Inequalities, 2021
Convex functions have played a major role in the field of Mathematical inequalities. In this paper, we introduce a new concept related to convexity, which proves better estimates when the function is somehow more convex than another.
M. Sababheh, S. Furuichi, H. Moradi
semanticscholar   +1 more source

Conserved Quantities of a Nonlinear Coupled System of Korteweg-De Vries Equations

open access: yesINTERNATIONAL JOURNAL OF MATHEMATICS AND COMPUTER RESEARCH, 2022
The conserved vectors from a system of coupled Kortewegde Vries equations that have modelled the propagation of shallow water waves, ion-acoustic waves in plasmas, solitons, and nonlinear perturbations along internal surfaces between layers of different ...
Joseph E Owuor
semanticscholar   +1 more source

On the Upper Bound of the Third Hankel Determinant for Certain Class of Analytic Functions Related with Exponential Function

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2022
In the present paper we introduce a new class of analytic functions f in the open unit disk normalized by f(0) = f′(0)−1 = 0, associated with exponential functions.
Breaz Daniel   +2 more
doaj   +1 more source

On numerical solution of nonlinear parabolic multicomponent diffusion-reaction problems

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2021
This work continues our previous analysis concerning the numerical solution of the multi-component mass transfer equations. The present test problems are two-dimensional, parabolic, non-linear, diffusion- reaction equations. An implicit finite difference
Juncu Gh., Popa C., Sarbu Gh.
doaj   +1 more source

A Benchmark Generalization of Fuzzy Soft Ideals in Ordered Semigroups

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2021
In real life, variability and inaccuracy are always presentand must be calculated by either possibilistic, probabilistic, polymorphic or other uncertainty approach. This benchmark study is about to construct new types of fuzzy soft ideals i.e., (∈, ∈ ∨qk)
Khan Faiz Muhammad   +3 more
doaj   +1 more source

New aspects in polygroup theory

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2020
The aim of this paper is to compute the commutativity degree in polygroup’s theory, more exactly for the polygroup PG and for extension of polygroups by polygroups, obtaining boundaries for them.
Sonea Andromeda Cristina
doaj   +1 more source

On k-quasi-M-hyponormal operators

open access: yes, 2013
In this present article we introduce a new class of operators which we will be called the class of k -quasi-M -hyponormal operators that includes hyponormal an M -hyponormal operators.
S. Mécheri
semanticscholar   +1 more source

On generalized derivation in Banach spaces

open access: yes, 2017
In this paper we generalized two important results of B. P. Duggal [4, Theorem 2.1 and 2.6], and other results are also given. If B(X ) is the algebra of all bounded linear operators on a complex Banach space X and J (X )={x∈B(X ) : x = x1+ix2, where x1 ...
A. Mansour, S. Bouzenada
semanticscholar   +1 more source

Existence and uniqueness of solutions for certain functional equations and system of functional equations arising in dynamic programming

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
This paper deals with the existence, uniqueness and iterative approximations of solutions for the functional equations and system of functional equations arising in dynamic programming of multistage decision making processes in Banach spaces and complete
Deepmala, Agarwal Ravi P.
doaj   +1 more source

Spectral Properties of n-perinormal operators

open access: yes, 2012
In this paper we study spectral properties of class (M,n) or n -perinormal operators. It is shown that if T belongs to class (M,n) , then its point spectrum and joint point spectrum are identical.
S. Mécheri, N. Braha
semanticscholar   +1 more source

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