Results 11 to 20 of about 495,323 (228)

Functions Like Convex Functions

open access: yesJournal of Function Spaces, 2015
The paper deals with convex sets, functions satisfying the global convexity property, and positive linear functionals. Jensen's type inequalities can be obtained by using convex combinations with the common center. Following the idea of the common center,
Zlatko Pavić
doaj   +1 more source

Convex Functions in ACL2(r) [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2018
This paper builds upon our prior formalisation of R^n in ACL2(r) by presenting a set of theorems for reasoning about convex functions. This is a demonstration of the higher-dimensional analytical reasoning possible in our metric space formalisation of R ...
Carl Kwan, Mark R. Greenstreet
doaj   +1 more source

A Characterization of Convex Functions [PDF]

open access: yes, 2017
Let $D$ be a convex subset of a real vector space. It is shown that a radially lower semicontinuous function $f: D\to \mathbf{R}\cup \{+\infty\}$ is convex if and only if for all $x,y \in D$ there exists $\alpha=\alpha(x,y) \in (0,1)$ such that $f(\alpha
Leonetti, Paolo
core   +2 more sources

New Criteria for Univalent‎, ‎Starlike‎, ‎Convex‎, ‎and Close-to-Convex Functions on the Unit Disk [PDF]

open access: yesMathematics Interdisciplinary Research, 2020
In the present paper, we introduce and investigate three interesting superclasses SD, SD* and KD of analytic, normalized and univalent functions in the open unit disk D.
Mohammad Reza Yasamian   +2 more
doaj   +1 more source

Inequalities of Hermite-Hadamard Type for GG-Convex Functions

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2019
Some inequalities of Hermite-Hadamard type for GG-convex functions defined on positive intervals are given. Applications for special means are also provided.
Dragomir S. S.
doaj   +1 more source

INEQUALITIES OF HERMITE-HADAMARD TYPE FOR HG-CONVEX FUNCTIONS

open access: yesПроблемы анализа, 2017
Some inequalities of Hermite-Hadamard type for HGconvex functions defined on positive intervals are given. Applications for special means are also provided.
S. S. Dragomir
doaj   +1 more source

Directed Subdifferentiable Functions and the Directed Subdifferential without Delta-Convex Structure [PDF]

open access: yes, 2013
We show that the directed subdifferential introduced for differences of convex (delta-convex, DC) functions by Baier and Farkhi can be constructed from the directional derivative without using any information on the DC structure of the function.
Baier, Robert   +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

Convex Multivariable Trace Functions

open access: yes, 2001
For any densely defined, lower semi-continuous trace \tau on a C*-algebra A with mutually commuting C*-subalgebras A_1, A_2, ... A_n, and a convex function f of n variables, we give a short proof of the fact that the function (x_1, x_2, ..., x_n ...
Lieb, Elliott H., Pedersen, Gert K.
core   +1 more source

Inf-convolution and regularization of convex functions on Riemannian manifolds of nonpositive curvature [PDF]

open access: yes, 2005
We show how an operation of inf-convolution can be used to approximate convex functions with $C^{1}$ smooth convex functions on Riemannian manifolds with nonpositive curvature (in a manner that not only is explicit but also preserves some other ...
Azagra, Daniel, Ferrera, Juan
core   +5 more sources

Home - About - Disclaimer - Privacy