Results 21 to 30 of about 157 (74)

Hadamard-type inequalities for generalized convex functions

open access: yes, 2003
In this paper we investigate (ω1,ω2) -convex functions and obtain characterization theorems and Hadamard-type inequalities for them. Mathematics subject classification (2000): 26A51, 26B25.
M. Bessenyei, Zsolt Páles
semanticscholar   +1 more source

On some inequalities equivalent to the Wright-convexity

open access: yes, 2015
In the present paper we establish some conditions and inequalities equivalent to the Wright-convexity. Mathematics subject classification (2010): 39B62, 26A51, 26B25.
A. Olbryś
semanticscholar   +1 more source

Certain Inequalities for Convex Functions

open access: yes, 2015
This is a review paper on some new inequalities for convex functions of one and several variables. The most important result presented for convex functions of one variable is the extension of Jensen’s inequality to affine combinations.
Zlatko Pavić
semanticscholar   +1 more source

Characterizations of bivariate conic, extreme value, and Archimax copulas

open access: yesDependence Modeling, 2017
Based on a general construction method by means of bivariate ultramodular copulas we construct, for particular settings, special bivariate conic, extreme value, and Archimax copulas. We also show that the sets of copulas obtained in this way are dense in
Saminger-Platz Susanne   +3 more
doaj   +1 more source

Vector majorization and Schur-concavity of some sums generated by the Jensen and Jensen-Mercer functionals

open access: yes, 2015
In this paper we study a vector majorization ordering for comparing two m -tuples of vectors of a real linear space. This extends the classical approach of (scalar) majorization theory for comparing m -tuples of scalars in R .
M. Niezgoda
semanticscholar   +1 more source

Optimality and duality in set-valued optimization utilizing limit sets

open access: yesOpen Mathematics, 2018
This paper deals with optimality conditions and duality theory for vector optimization involving non-convex set-valued maps. Firstly, under the assumption of nearly cone-subconvexlike property for set-valued maps, the necessary and sufficient optimality ...
Kong Xiangyu, Zhang Yinfeng, Yu GuoLin
doaj   +1 more source

Two double inequalities for k-gamma and k-Riemann zeta functions

open access: yes, 2014
By using methods in the theory of majorization, a double inequality for the gamma function is extended to the k-gamma function and the k-Riemann zeta function.MSC:33B15, 26D07, 26B25.
Jing Zhang, Huan-Nan Shi
semanticscholar   +1 more source

Continuity properties of K-midconvex and K-midconcave set-valued maps

open access: yesMathematical Inequalities & Applications, 2019
A recent result on the continuity of midconvex functionals upper bounded on a not null-finite set (see [2]) is extended to K -midconvex and K -midconcave set-valued maps. Mathematics subject classification (2010): 26B25, 39B62, 54C60.
E. Jabłońska, K. Nikodem
semanticscholar   +1 more source

An alternative note on the Schur-convexity of the extended mean values

open access: yes, 2006
The Schur-convex and Schur-concave properties with (x, y) in (0,∞) × (0,∞) for fixed (r, s) of the extended mean values E(r, s; x, y) are researched again, some errors in [F. Qi, J. Sandor, S. S. Dragomir, and A. Sofo, Notes on the Schur-convexity of the
Huan-Nan Shi   +2 more
semanticscholar   +1 more source

Schur power convexity of the Daróczy means

open access: yes, 2013
In this paper, the Schur convexity is generalized to Schur f -convexity, which contains the Schur geometrical convexity, harmonic convexity and so on.
Zhen-Hang Yang
semanticscholar   +1 more source

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