Results 21 to 30 of about 82 (80)

Nonlinear Sherman-type inequalities

open access: yesAdvances in Nonlinear Analysis, 2018
An important class of Schur-convex functions is generated by convex functions via the well-known Hardy–Littlewood–Pólya–Karamata inequality. Sherman’s inequality is a natural generalization of the HLPK inequality.
Niezgoda Marek
doaj   +1 more source

Hyperelastic bodies under homogeneous Cauchy stress induced by three-dimensional non-homogeneous deformations [PDF]

open access: yes, 2018
In isotropic finite elasticity, unlike in the linear elastic theory, a homogeneous Cauchy stress may be induced by non-homogeneous strains. To illustrate this, we identify compatible nonhomogeneous three-dimensional deformations producing a homogeneous
Mihai, Loredana Angela, Neff, Patrizio
core   +1 more source

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

open access: yes, 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 M φ (f).
Yasuo Nakasuji   +2 more
core   +1 more source

ON THE CONVEXITY OF PIECEWISE-DEFINED FUNCTIONS ∗, ∗∗, ∗∗∗ [PDF]

open access: yes, 2016
. Functions that are piecewise defined are a common sight in mathematics while convexity is a property especially desired in optimization. Suppose now a piecewise-defined function is convex on each of its defining components — when can we conclude that ...
Lucet, Yves   +5 more
core   +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

Characterizations of minimal elements of upper support with applications in minimizing DC functions

open access: yesOpen Mathematics
In this study, we discuss on the problem of minimizing the differences of two non-positive valued increasing, co-radiant and quasi-concave (ICRQC) functions defined on XX (where XX is a real locally convex topological vector space).
Mirzadeh Somayeh   +2 more
doaj   +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

Hermite-Hadamard-type inequalities for generalized trigonometrically and hyperbolic ρ-convex functions in two dimension

open access: yesOpen Mathematics
In this article, we establish Hermite-Hadamard-type inequalities for the two classes of functions X±λ(Ω)={f∈C2(Ω):Δf±λf≥0}{X}_{\pm \lambda }\left(\Omega )=\{f\in {C}^{2}\left(\Omega ):\Delta f\pm \lambda f\ge 0\}, where λ>0\lambda \gt 0 and Ω\Omega is ...
Dragomir Silvestru Sever   +2 more
doaj   +1 more source

New Jensen's bounds for HA-convex mappings with applications to Shannon entropy

open access: yesDemonstratio Mathematica
The aim of this article is to establish some new extensions and variants of Jensen’s discrete and Simic-type inequalities for HA-convex and uniformly HA-convex functions.
Sayyari Yamin   +4 more
doaj   +1 more source

Monotone Valuations on the Space of Convex Functions

open access: yesAnalysis and Geometry in Metric Spaces, 2015
We consider the space Cn of convex functions u defined in Rn with values in R ∪ {∞}, which are lower semi-continuous and such that lim|x| } ∞ u(x) = ∞.
Cavallina L., Colesanti A.
doaj   +1 more source

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