Results 11 to 20 of about 82 (80)

A strong convergence theorem on solving common solutions for generalized equilibrium problems and fixed-point problems in Banach space [PDF]

open access: yesFixed Point Theory and Applications, 2011
In this paper, the common solution problem (P1) of generalized equilibrium problems for a system of inverse-strongly monotone mappings and a system of bifunctions satisfying certain conditions, and the common fixed-point problem (P2) for a family of ...
Qu De-ning, Cheng Cao-zong
doaj   +2 more sources

A new interpretation of Jensen's inequality and geometric properties of φ -means

open access: yesJournal of Inequalities and Applications, 2011
We introduce a mean of a real-valued measurable function f on a probability space induced by a strictly monotone function φ. Such a mean is called a φ-mean of f and written by Mφ (f).
Takahasi Sin-Ei   +2 more
doaj   +1 more source

A sequential method for a class of pseudoconcave fractional problems [PDF]

open access: yes, 2008
Fractional programming, Pseudoconcavity, Post-optimality analysis, 90C32, 26B25,
Laura Martein   +3 more
core   +1 more source

Convexity-preserving properties of set-valued ratios of affine functions

open access: yes, 2021
The aim of this paper is to introduce some classes of set-valued functions that preserve the convexity of sets by direct and inverse images. In particular, we show that the so-called set-valued ratios of affine functions represent such a class.
POPOVICI, Nicolae, ORZAN, Alexandru
core   +1 more source

Fractional Hadamard and Fej´er-Hadamard inequalities for exponentially m-convex function

open access: yes, 2021
Fractional integral operators play a vital role in the advancement of mathematical inequalities. The aim of this paper is to present the Hadamard and the Fej´er-Hadamard inequalities for generalized fractional integral operators containing Mittag-Leffler
MEHMOOD, Sajid, FARID, Ghulam
core   +1 more source

A note on convex functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 22, Issue 3, Page 525-534, 1999., 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
wiley   +1 more source

Coincidence theorems and minimax inequalities in abstract convex spaces [PDF]

open access: yes, 2011
In this paper, we deal with the notion of abstract convex spaces via minimal spaces as an extended version of other forms of convexity and establish some well-known results such as coincidence theorems for the classes m-KKM and ms-KKM of multimaps and Ky
Mohsen Rostamian Delavar   +5 more
core   +1 more source

Transformations which preserve convexity

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 8, Issue 1, Page 49-55, 1985., 1985
Let C be the class of convex nondecreasing functions f : [0, ∞) → [0, ∞) which satisfy f(0) = 0. Marshall and Proschan [1] determine the one‐to‐one and onto functions ψ : [0, ∞) → [0, ∞) such that g = ψ∘f∘ψ−1 belongs to C whenever f belongs to C. We study several natural models for multivariate extension of the Marshall‐Proschan result.
Robert A. Fontenot, Frank Proschan
wiley   +1 more source

A primal-dual approach of weak vector equilibrium problems

open access: yesOpen Mathematics, 2018
In this paper we provide some new sufficient conditions that ensure the existence of the solution of a weak vector equilibrium problem in Hausdorff topological vector spaces ordered by a cone.
László Szilárd
doaj   +1 more source

Polynomial bivariate copulas of degree five: characterization and some particular inequalities

open access: yesDependence Modeling, 2021
Bivariate polynomial copulas of degree 5 (containing the family of Eyraud-Farlie-Gumbel-Morgenstern copulas) are in a one-to-one correspondence to certain real parameter triplets (a, b, c), i.e., to some set of polynomials in two variables of degree 1: p(
Šeliga Adam   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy