Results 31 to 40 of about 497,650 (327)

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

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

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

Convex relaxations of componentwise convex functions

open access: yesComputers & Chemical Engineering, 2019
Published by Elsevier Science, Amsterdam [u.a.]
Najman, Jaromil   +2 more
openaire   +3 more sources

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

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

Inequalities of Hermite-Hadamard Type

open access: yesMoroccan Journal of Pure and Applied Analysis, 2015
Some inequalities of Hermite-Hadamard type for λ-convex functions defined on convex subsets in real or complex linear spaces are given. Applications for norm inequalities are provided as well.
Dragomir S. S.
doaj   +1 more source

On \(t\)-convex functions

open access: yes, 2003
Let \(t \in ]0,1[\). A real-valued function \(f\) defined on an interval \(I \subseteq \mathbb{R}\) is called \(t\)-convex if \(f(tx+(1-t)y) \leq tf(x)+(1-t)f(y)\) for all \(x,y \in I\). The authors show that such functions are characterized by the nonnegativity of their (suitably defined) lower second-order generalized derivatives.
Nikodem, Kazimierz, Páles, Zsolt
openaire   +2 more sources

On Bazilevič and convex functions [PDF]

open access: yesTransactions of the American Mathematical Society, 1969
(2) zf'(z) = f(z)'g(z)lh(z) and (3) Reh(z) = Re(zf'(z)/f(z)'1-,g(z)") > 0 in IzI < 1. Thomas [12] called a function satisfying the condition (3) a Bazilevic function of type /. Let C(r) denote the curve which is the image of the circle Izi =r < 1 under the mapping w =f(z), and let L(r) denote the length of C(r). Let M(r) = maxj2j = r I f(z) 1.
openaire   +1 more source

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