Results 11 to 20 of about 65,408 (307)

Some Reciprocal Classes of Close-to-Convex and Quasi-Convex Analytic Functions

open access: yesMathematics, 2019
The present paper comprises the study of certain functions which are analytic and defined in terms of reciprocal function. The reciprocal classes of close-to-convex functions and quasi-convex functions are defined and studied.
Shahid Mahmood   +3 more
doaj   +2 more sources

Lp approximation by quasi-convex and convex functions

open access: yesJournal of Mathematical Analysis and Applications, 1989
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ubhaya, Vasant A
openaire   +3 more sources

Optimality Conditions of the Approximate Efficiency for Nonsmooth Robust Multiobjective Fractional Semi-Infinite Optimization Problems

open access: yesAxioms, 2023
This paper is devoted to the investigation of optimality conditions and saddle point theorems for robust approximate quasi-weak efficient solutions for a nonsmooth uncertain multiobjective fractional semi-infinite optimization problem (NUMFP). Firstly, a
Liu Gao, Guolin Yu, Wenyan Han
doaj   +1 more source

Quasi-convex and Q-class functions

open access: yesJournal of Mathematical Inequalities, 2023
Summary: Convex functions and their variants have played a significant role in the literature. In this article, we investigate two important related classes, namely quasi-convex and \(Q\)-class functions. We will show that these two classes satisfy similar but different properties as those fulfilled by convex functions.
Moradi, Hamid Reza   +2 more
openaire   +2 more sources

On quasi convex functions and Hadamardʼs inequality [PDF]

open access: yesDemonstratio Mathematica, 2008
AbstractIn this paper we establish some inequalities of Hadamardʼs type involving Godunova-Levin functions, P-functions, quasi-convex functions, J-quasi-convex functions, Wright-convex functions and Wright-quasi-convex functions.
Tseng, Kuei-Lin   +2 more
openaire   +1 more source

Estimations of the Jensen Gap and Their Applications Based on 6-Convexity

open access: yesMathematics, 2023
The main purpose of this manuscript is to present some new estimations of the Jensen gap in a discrete sense along with their applications. The proposed estimations for the Jensen gap are provided with the help of the notion of 6-convex functions.
Muhammad Adil Khan   +3 more
doaj   +1 more source

Maps on density operators preserving quantum f-divergences [PDF]

open access: yes, 2013
For an arbitrary strictly convex function f defined on the non-negative real line we determine the structure of all transformations on the set of density operators which preserve the quantum f ...
Szokol, Patrícia Ágnes   +2 more
core   +1 more source

Convex approximations for complete integer recourse models [PDF]

open access: yes, 2002
We consider convex approximations of the expected value function of a two-stage integer recourse problem. The convex approximations are obtained by perturbing the distribution of the random right-hand side vector.
Vlerk, Maarten H. van der   +2 more
core   +1 more source

A note on convex functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
In this paper, we give two weak conditions for a lower semi-continuous function on the n-dimensional Euclidean space Rn to be a convex function. We also present some results for convex functions, strictly convex functions, and quasi-convex functions.
Yu-Ru Syau
doaj   +1 more source

Operator Monotone Functions and Convexity of Its Derivatives Norms

open access: yesپژوهش‌های ریاضی, 2021
Introduction  Given the important role convex and quasi-convex functions play in many areas of mathematics and especially in optimization, one of the inequalities that has attracted the attention of many mathematicians in recent decades is Hermit ...
Zahra Rahimi Chegeni   +2 more
doaj  

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