Results 51 to 60 of about 11,635 (239)

Cone Lattices of Upper Semicontinuous Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1982
Let X X be a compact metric space. A well-known theorem of M. H. Stone states that if Ω \Omega is a vector lattice of continuous functions on X X that separates points and contains a nonzero constant function, then the uniform closure of Ω \Omega is C ...
openaire   +2 more sources

Efficiency in Pure‐Exchange Economies With Risk‐Averse Monetary Utilities

open access: yesMathematical Finance, EarlyView.
ABSTRACT We study Pareto efficiency in a pure‐exchange economy where agents' preferences are represented by risk‐averse monetary utilities. These coincide with law‐invariant monetary utilities, and they can be shown to correspond to the class of monotone, (quasi‐)concave, Schur concave, and translation‐invariant utility functionals. This covers a large
Mario Ghossoub, Michael B. Zhu
wiley   +1 more source

Long-time dynamical behavior for a piezoelectric system with magnetic effect and nonlinear dampings

open access: yesElectronic Research Archive, 2022
This paper is concerned with the long-time dynamical behavior of a piezoelectric system with magnetic effect, which has nonlinear damping terms and external forces with a parameter.
Gongwei Liu, Mengru Wang, Pengyan Ding
doaj   +1 more source

On the upper semicontinuity of Choquet capacities

open access: yesInternational Journal of Approximate Reasoning, 2010
The distribution of a random closed set \(X\) in a locally compact second countable Hausdorff space \(E\) is uniquely determined by its capacity functional \(T(K)=\mathbf{P}(X\cap K\neq\emptyset)\) for all \(K\) from the family \(\mathcal{K}\) of compact sets.
Wei, Guo   +3 more
openaire   +2 more sources

Dual spaces of geodesic currents

open access: yesJournal of Topology, Volume 18, Issue 4, December 2025.
Abstract Every geodesic current on a hyperbolic surface has an associated dual space. If the current is a lamination, this dual embeds isometrically into a real tree. We show that, in general, the dual space is a Gromov hyperbolic metric tree‐graded space, and express its Gromov hyperbolicity constant in terms of the geodesic current.
Luca De Rosa, Dídac Martínez‐Granado
wiley   +1 more source

Upper semicontinuity of pullback attractors for a nonautonomous damped wave equation

open access: yesBoundary Value Problems, 2021
In this paper, we study the local uniformly upper semicontinuity of pullback attractors for a strongly damped wave equation. In particular, under some proper assumptions, we prove that the pullback attractor { A ε ( t ) } t ∈ R $\{A_{\varepsilon }(t)\}_ ...
Yonghai Wang, Minhui Hu, Yuming Qin
doaj   +1 more source

On Lower Semicontinuity and Metric Upper Semicontinuity of Nemytskii Set-Valued Operators

open access: yesZeitschrift für Analysis und ihre Anwendungen, 1994
Sufficient conditions of lower semicontinuity and metric upper semicontinuity of Nemytskii set-valued operators N_F generated by a set-valued function F: \Omega \times X \to 2^Y , where X
Rolewicz, S., Wen, Song
openaire   +3 more sources

A note on Laplacian bounds, deformation properties, and isoperimetric sets in metric measure spaces

open access: yesJournal of the London Mathematical Society, Volume 112, Issue 5, November 2025.
Abstract In the setting of length PI spaces satisfying a suitable deformation property, it is known that each isoperimetric set has an open representative. In this paper, we construct an example of a length PI space (without the deformation property) where an isoperimetric set does not have any representative whose topological interior is nonempty ...
Enrico Pasqualetto, Tapio Rajala
wiley   +1 more source

MF-traces and a Lower Bound for the Topological Free Entropy Dimension in Unital C*-algebras [PDF]

open access: yes, 2011
We continue previous work on Voiculescu's topological free entropy dimension {\delta}_{top}. We introduce the notions of MF-trace, MF-ideal, and MF-nuclearity and use these concepts to obtain upper and lower bounds for {\delta}_{top}, and in many cases ...
Hadwin, Don   +3 more
core  

Screening for breakthroughs

open access: yesTheoretical Economics, Volume 20, Issue 4, Page 1323-1365, November 2025.
How best to incentivize prompt disclosure? We study this question in a general model in which a technological breakthrough occurs at an uncertain time and is privately observed by an agent, and a principal must incentivize disclosure via her control of a payoff‐relevant physical allocation.
Gregorio Curello, Ludvig Sinander
wiley   +1 more source

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