Results 11 to 20 of about 639,816 (328)

Approximately convex functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1952
So far we have discussed the stability of various functional equations. In the present section, we consider the stability of a well-known functional inequality, namely the inequality defining convex functions: $$f\left( {\lambda x + \left( {1 - \lambda } \right)y} \right) \leqslant \lambda f\left( x \right) + \left( {1 - \lambda } \right)f\left( y \
Hyers, D. H., Ulam, S. M.
openaire   +2 more sources

A New Advanced Class of Convex Functions with Related Results

open access: yesAxioms, 2023
It is the purpose of this paper to propose a novel class of convex functions associated with strong η-convexity. A relationship between the newly defined function and an earlier generalized class of convex functions is hereby established.
Muhammad Adil Khan   +3 more
doaj   +1 more source

Convex Defining Functions for Convex Domains [PDF]

open access: yesJournal of Geometric Analysis, 2010
21 ...
Herbig, Anne-Katrin, McNeal, Jeffery D.
openaire   +3 more sources

Conditionally approximately convex functions

open access: yesDemonstratio Mathematica, 2016
Let X be a real normed space, V be a subset of X and α: [0, ∞) → [0, ∞] be a nondecreasing function. We say that a function f : V → [−∞, ∞] is conditionally α-convex if for each convex combination ∑i=0ntivi$\sum\nolimits_{i = 0}^n {t_i v_i }$ of ...
Najdecki Adam, Tabor Józef
doaj   +1 more source

An application of the generalized Bessel function [PDF]

open access: yesMathematica Bohemica, 2017
We introduce and study some new subclasses of starlike, convex and close-to-convex functions defined by the generalized Bessel operator. Inclusion relations are established and integral operator in these subclasses is discussed.
Hanan Darwish   +2 more
doaj   +1 more source

Projections Onto Convex Sets (POCS) Based Optimization by Lifting [PDF]

open access: yes, 2013
Two new optimization techniques based on projections onto convex space (POCS) framework for solving convex and some non-convex optimization problems are presented.
Bozkurt, A.   +7 more
core   +2 more sources

Functions Like Convex Functions [PDF]

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, the functional forms of Jensen's inequality are considered in this paper.
openaire   +4 more sources

DC Proximal Newton for Non-Convex Optimization Problems [PDF]

open access: yes, 2015
We introduce a novel algorithm for solving learning problems where both the loss function and the regularizer are non-convex but belong to the class of difference of convex (DC) functions.
Flamary, Remi   +2 more
core   +4 more sources

CONVEX MULTIVARIABLE TRACE FUNCTIONS [PDF]

open access: yesReviews in Mathematical Physics, 2002
For any densely defined, lower semi-continuous trace τ on a C*-algebra A with mutually commuting C*-subalgebras A1, A2, … An, and a convex function f of n variables, we give a short proof of the fact that the function (x1, x2, …, xn)→ τ (f (x1, x2, …, xn)) is convex on the space [Formula: see text].
Lieb, E.H., Pedersen, Gert Kjærgård
openaire   +3 more sources

Root Function and Convex Function

open access: yesCommunications Faculty Of Science University of Ankara, 1974
Many authors [1], [2], [3], [4] considered the problems under different weak conditions which imply the continuity of the functions. In this section, we will consider convex functions on a commutative topological group with a root function.
Bilgezadeh, A., Pellong, C.
openaire   +5 more sources

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