Results 51 to 60 of about 164 (149)

Subgroups of word hyperbolic groups in dimension 2 over arbitrary rings

Journal of the London Mathematical Society, Volume 112, Issue 1, July 2025.
Abstract In 1996, Gersten proved that finitely presented subgroups of a word hyperbolic group of integral cohomological dimension 2 are hyperbolic. We use isoperimetric functions over arbitrary rings to extend this result to any ring. In particular, we study the discrete isoperimetric function and show that its linearity is equivalent to hyperbolicity,
Shaked Bader, Robert Kropholler, Vladimir Vankov   +2 more
wiley   +1 more source

Partial regularity for $$\omega $$-minimizers of quasiconvex functionals

Calculus of Variations and Partial Differential Equations, 2022
AbstractWe establish partial regularity for the$$\omega $$ω-minimizers of quasiconvex functionals of power growth. A first-order partial regularity result ofBV$$\omega $$ω-minimizers is obtained in the linear growth case under a Dini-type condition on$$\omega $$ω.
openaire   +3 more sources

Anticomonotonicity for preference axioms: The natural counterpart to comonotonicity

Theoretical Economics, Volume 20, Issue 3, Page 831-855, July 2025.
Comonotonicity (same variation) of random variables minimizes hedging possibilities and has been widely used, e.g., in Gilboa and Schmeidler's ambiguity models. This paper investigates anticomonotonicity (opposite variation (AC)), the natural counterpart to comonotonicity. It minimizes leveraging rather than hedging possibilities.
Giulio Principi, Peter P. Wakker, Ruodu Wang   +2 more
wiley   +1 more source

Properties for Close-to-Convex and Quasi-Convex Functions Using q-Linear Operator

Mathematics
In this work, we describe the q-analogue of a multiplier–Ruscheweyh operator of a specific family of linear operators Iq,ρs(ν,τ), and we obtain findings related to geometric function theory (GFT) by utilizing approaches established through subordination ...
Ekram E. Ali, Rabha M. El-Ashwah, Abeer M. Albalahi, Wael W. Mohammed   +3 more
doaj   +1 more source

Weighted version of Hermite–Hadamard type inequalities for geometrically quasi-convex functions and their applications

Journal of Inequalities and Applications, 2018
This paper presents new weighted Hermite–Hadamard type inequalities for a new class of convex functions which are known as geometrically quasi-convex functions.
Sofian Obeidat, Muhammad Amer Latif
doaj   +1 more source

A two-level vertex-searching global algorithm framework for bilevel linear fractional programming problems

Systems Science & Control Engineering, 2020
We propose a new two-level vertex-searching algorithm framework that finds a global optimal solution to the continuous bilevel linear fractional programming problem over a compact polyhedron, in which both the upper and the lower objectives are linear ...
Hui-Ju Chen
doaj   +1 more source

Structure of quasiconvex virtual joins

Journal of Topology, Volume 18, Issue 2, June 2025.
Abstract Let G$G$ be a relatively hyperbolic group and let Q$Q$ and R$R$ be relatively quasiconvex subgroups. It is known that there are many pairs of finite index subgroups Q′⩽fQ$Q^{\prime } \leqslant _f Q$ and R′⩽fR$R^{\prime } \leqslant _f R$ such that the subgroup join ⟨Q′,R′⟩$\langle Q^{\prime }, R^{\prime } \rangle$ is also relatively quasiconvex,
Lawk Mineh
wiley   +1 more source

On Some New Weighted Inequalities for Differentiable Exponentially Convex and Exponentially Quasi-Convex Functions with Applications

Mathematics, 2019
In this article, we aim to establish several inequalities for differentiable exponentially convex and exponentially quasi-convex mapping, which are connected with the famous Hermite−Hadamard (HH) integral inequality.
Dongming Nie, Saima Rashid, Ahmet Ocak Akdemir, Dumitru Baleanu, Jia-Bao Liu   +4 more
doaj   +1 more source

Relative cubulation of relative strict hyperbolization

Journal of the London Mathematical Society, Volume 111, Issue 4, April 2025.
Abstract We prove that many relatively hyperbolic groups obtained by relative strict hyperbolization admit a cocompact action on a CAT(0)$\operatorname{CAT}(0)$ cubical complex. Under suitable assumptions on the peripheral subgroups, these groups are residually finite and even virtually special.
Jean‐François Lafont, Lorenzo Ruffoni
wiley   +1 more source

Quasiconvex bulk and surface energies: C1,α regularity

Advances in Nonlinear Analysis
We establish regularity results for equilibrium configurations of vectorial multidimensional variational problems, involving bulk and surface energies.
Carozza Menita, Esposito Luca, Lamberti Lorenzo   +2 more
doaj   +1 more source