Results 41 to 50 of about 431 (190)

Up and Down h-Pre-Invex Fuzzy-Number Valued Mappings and Some Certain Fuzzy Integral Inequalities

open access: yesAxioms, 2022
The objective of the current paper is to incorporate the new class and concepts of convexity and Hermite–Hadamard inequality with the fuzzy Riemann integral operators because almost all classical single-valued and interval-valued convex functions are ...
Muhammad Bilal Khan   +3 more
doaj   +1 more source

w-Invexity and optimality problem

open access: yesJournal of Taibah University for Science
As the development of a family of preinvex functions, we define the w-invex set and a class of real functions. These are functions with the names w-preinvex, w-strictly preinvex, w-prequasi-invex, w-strictly prequasi-invex, w-semi-strictly prequasi-invex,
Musavvir Ali, Ehtesham Akhter
doaj   +1 more source

Invex programming problems with equality and inequality constraints [PDF]

open access: yes, 2018
The class of functions is known as invex function (invariant convex) in the literature and the name derives from the fact that the convex like property of such functions remains invariant under all diffeomorphisms of [Formula presented] into [Formula ...
null Deepmala   +5 more
core   +1 more source

CONTINUOUS RELAXATION FOR COMBINATORIAL PROBLEMS - A STUDY OF CONVEX AND INVEX PROGRAMS [PDF]

open access: yes, 2023
In this thesis, we study optimization problems which have a combinatorial aspect to them. Search space for such problems quickly grows large - exponentially - with respect to the problem dimension.
Adarsh Barik (15359902)
core   +1 more source

Jensen-Type Inequalities for Invex Functions [PDF]

open access: yes, 1999
Jensen's inequality for a real convex function f on a convex domain is generalised in several ways to vector functions with a cone inequality, and to invex functions generalizing convex ...
Craven, Bruce Desmond   +2 more
core  

An η-approximation approach to duality in mathematical programming problems involving r-invex functions [PDF]

open access: yes, 2006
An η-approximation approach introduced by Antczak [T. Antczak, A new method of solving nonlinear mathematical programming problems involving r-invex functions, J. Math. Anal. Appl.
Antczak, Tadeusz
core   +1 more source

An eye on long‐duration spaceflight: Controversies, countermeasures and challenges

open access: yesExperimental Physiology, EarlyView.
Abstract Space flight‐associated neuroocular syndrome (SANS) is a consequence of long‐duration space flight and is detected in two‐thirds of astronauts. In‐flight, this can cause a change in the refraction of the eyes, requiring graded hypermetropic ‘superfocus adjustable’ glasses, optic nerve head oedema and choroidal folds.
Vincent Wing Sum Ng   +1 more
wiley   +1 more source

Second-order duality for invex composite optimization [PDF]

open access: yes, 2015
The second-order duality results for the invex composite optimization problem are studied. Its objective function is a composition of nonfinite valued differentiable invex and a vector valued functions. Several duality results are also discussed for both
Nahak, Chandal, Padhan, Saroj Kumar
core   +1 more source

Interval‐valued Caputo–Fabrizio fractional derivative in continuous programming

open access: yesAsian Journal of Control, Volume 28, Issue 1, Page 497-514, January 2026.
Abstract This study investigates a novel class of variational programming problems characterized by fractional interval values, formulated under the Caputo–Fabrizio fractional derivative with an exponential kernel. Invex and generalized invex functions are used to discuss the Mond–Weir‐type dual problem for the considered variational problem.
Krishna Kummari   +2 more
wiley   +1 more source

Generalized Geodesic Convexity on Riemannian Manifolds

open access: yesMathematics, 2019
We introduce log-preinvex and log-invex functions on a Riemannian manifold. Some properties and relationships of these functions are discussed. A characterization for the existence of a global minimum point of a mathematical programming problem is ...
Izhar Ahmad   +2 more
doaj   +1 more source

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