Results 11 to 20 of about 532 (159)

Height, Graded Relative Hyperbolicity and Quasiconvexity [PDF]

open access: yes, 2017
International audienceWe introduce the notions of geometric height and graded (geometric) relative hyperbolicity in this paper. We use these to characterize quasiconvexity in hyperbolic groups, relative quasiconvexity in relatively hyperbolic groups, and
François Dahmani   +3 more
core   +1 more source

General H-theorem and Entropies that Violate the Second Law

open access: yesEntropy, 2014
H-theorem states that the entropy production is nonnegative and, therefore, the entropy of a closed system should monotonically change in time. In information processing, the entropy production is positive for random transformation of signals (the ...
Alexander N. Gorban
doaj   +1 more source

Sufficient optimality conditions and duality for nonsmooth multiobjective optimization problems via higher order strong convexity [PDF]

open access: yesYugoslav Journal of Operations Research, 2017
In this paper, we define some new generalizations of strongly convex functions of order m for locally Lipschitz functions using Clarke subdifferential.
Upadhyay Balendu B.   +2 more
doaj   +1 more source

A-Quasiconvexity: Relaxation and Homogenization [PDF]

open access: yesESAIM: Control, Optimisation and Calculus of Variations, 2000
The paper deals with problems in the calculus of variations where minimization of the energy functional \[ (u,v)\mapsto\int_\Omega f\bigl(x,u(x),v(x)\bigr) dx \] (with \(\Omega\subset{\mathbb{R}}^N\) open, \(u:\Omega\to{\mathbb{R}}^m\), \(v:\Omega\to{\mathbb{R}}^d\)) is performed with a differential constraint \({\mathcal A}v=0\), where \[ {\mathcal A ...
Braides, Andrea   +2 more
openaire   +1 more source

Quasiconvexity preserving property for fully nonlinear nonlocal parabolic equations [PDF]

open access: yes, 2023
This paper is concerned with a general class of fully nonlinear parabolic equations with monotone nonlocal terms. We investigate the quasiconvexity preserving property of positive, spatially coercive viscosity solutions.
Kagaya, Takashi   +3 more
core   +1 more source

On the non-locality of quasiconvexity [PDF]

open access: yes, 1999
It is shown that in the class of smooth real-valued functions on n × m matrices (n = 3, m = 2) there can be no "local condition" which is equivalent to quasiconvexity. © Elsevier, Paris.
Kristensen, Jan   +2 more
core   +1 more source

Dentable functions and radially uniform quasi-convexity

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1978
In this paper we give a further result which states sufficient conditions for the theory of convergence of minimizing sequences to be applicable, develop the theory further, and give an application.
Carl G. Looney
doaj   +1 more source

Numerical approaches for investigating quasiconvexity in the context of Morrey's conjecture

open access: yes, 2022
Deciding whether a given function is quasiconvex is generally a difficult task. Here, we discuss a number of numerical approaches that can be used in the search for a counterexample to the quasiconvexity of a given function $W$. We will demonstrate these
Sander, Oliver (author)   +12 more
core   +1 more source

Necessary and Sufficient Conditions for Set-Valued Maps with Set Optimization

open access: yesAbstract and Applied Analysis, 2018
Optimality conditions are studied for set-valued maps with set optimization. Necessary conditions are given in terms of S-derivative and contingent derivative.
Abdessamad Oussarhan, Ikram Daidai
doaj   +1 more source

Generalized fractional integral inequalities by means of quasiconvexity

open access: yesAdvances in Difference Equations, 2019
Using the newly introduced fractional integral operators in (Fasc. Math. 20(4):5-27, 2016) and (East Asian Math. J. 21(2):191-203, 2005), we establish some novel inequalities of the Hermite–Hadamard type for functions whose second derivatives in absolute
Eze R. Nwaeze
doaj   +1 more source

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