Results 41 to 50 of about 532 (159)

Equivalence of Robust Multiobjective Bilevel Decision Problem Under Multiple Perturbation Sets

open access: yesJournal of Mathematics, Volume 2026, Issue 1, 2026.
The robust multiobjective bilevel decision problem (RMBDP) based on worst‐case conditional value at risk (WCVaR) is a bilevel decision model composed of multiple loss objectives of upper‐ and lower‐level decision‐makers under multiple perturbation sets in a concave probability density distribution function cluster.
Leiyan Xu   +5 more
wiley   +1 more source

Some remarks concerning quasiconvexity and strong convergence

open access: yes, 1987
SynopsisWe show that the weak convergence of a sequence of functions in a Sobolev space plus the convergence of appropriately quasiconvex “energies” imply, in fact, strong convergence.
R. F. Gariepy, L. C. Evans
core   +1 more source

Upper and lower bounds on the set of recoverable strains and on effective energies in cubic-to-monoclinic martensitic phase transformations

open access: yesMATEC Web of Conferences, 2015
A major open problem in the mathematical analysis of martensitic phase transformations is the derivation of explicit formulae for the set of recoverable strains and for the relaxed energy of the system.
Schlömerkemper Anja   +3 more
doaj   +1 more source

Connectedness and Contractibility of Solutions in Set Optimization Under Set Less Order Relations

open access: yesJournal of Mathematics, Volume 2026, Issue 1, 2026.
This study establishes the topological properties of solution sets in set optimization, focusing on their connectedness and contractibility. Utilizing the arcwise convexity and lower semicontinuity characteristics derived from scalarization techniques, we initially prove the connectedness of solution sets containing both weak and standard approximate ...
Taiyong Li, Manli Yang, Zai Yun Peng
wiley   +1 more source

Matrix-theoretic criteria for the quasiconvexity of twice continuously differentiable functions

open access: yes, 1981
The author examines matrices and bordered matrices having exactly one or at most one negative eigenvalue. These results are then used to state matrix-theoretic criteria for the quasiconvexity of twice continuously differentiable functions.
Ferland, Jacques A.
core   +1 more source

Painlevé-Kuratowski convergence for set optimization solutions using improvement sets

open access: yesApplied Mathematics in Science and Engineering
This paper investigates the Painlevé-Kuratowski convergence of solution sets in set optimization problems under perturbations. By introducing the notion of [Formula: see text]-[Formula: see text]-Strictly quasiconvexity for set-valued mappings, we ...
Taiyong Li, Manli Yang
doaj   +1 more source

Prosoluble subgroups of the profinite completion of the fundamental group of compact 3‐manifolds

open access: yesJournal of the London Mathematical Society, Volume 112, Issue 4, October 2025.
Abstract We give a description of finitely generated prosoluble subgroups of the profinite completion of 3‐manifold groups and toral relatively hyperbolic virtually compact special groups.
Lucas C. Lopes, Pavel A. Zalesskii
wiley   +1 more source

On residualizing homomorphisms preserving quasiconvexity

open access: yes, 2005
H is called a G-subgroup of a hyperbolic group G if for any finite subset M G there exists a homomorphism from G onto a non-elementary hyperbolic group G_1 that is surjective on H and injective on M. In his paper in 1993 A. Ol'shanskii gave a description
Minasyan, Ashot
core   +1 more source

Modelling of a collage problem

open access: yesElectronic Journal of Differential Equations, 2006
In this paper we study the behavior of elastic adherents connected with an adhesive. We use the $Gamma$-convergence method to approximate the problem modelling the assemblage with density energies assumed to be quasiconvex. In particular for the adhesive
Abdelaziz Ait Moussa, Loubna Zlaiji
doaj  

Additively decomposed quasiconvex functions [PDF]

open access: yesMathematical Programming, 1982
Letf be a real-valued function defined on the product ofm finite-dimensional open convex setsX1, ź,Xm. Assume thatf is quasiconvex and is the sum of nonconstant functionsf1, ź,fm defined on the respective factor sets. Then everyfi is continuous; with at most one exception every functionfi is convex; if the exception arises, all the other functions ...
Gerard Debreu, Tjalling C. Koopmans
openaire   +2 more sources

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