Results 51 to 60 of about 11,703 (241)

Upper semicontinuity of pullback attractors for a nonautonomous damped wave equation

Boundary 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

Upper semicontinuity of automorphism groups

Mathematische Annalen, 1994
The authors prove striking results on upper semicontinuity of automorphism groups. They show, for example, that if pairs \((M_j, G_j)\) \((M_j\) connected complex manifolds and \(G_j\) subgroups of \(\Aut (M_j))\) converge on compacta to a pair \((M,G)\), where \(M\) is a hyperbolic complex manifold and \(G\) is a subgroup of \(\Aut (M)\), then \(G_j\)
Fridman, Buma L., Poletsky, Evgeny A.
openaire   +2 more sources

Dual spaces of geodesic currents

Journal 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

Iterative roots of upper semicontinuous multifunctions [PDF]

Advances in Difference Equations, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Pingping Zhang, Liguo Huang
openaire   +3 more sources

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

Journal 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

Upper Semicontinuous Representations of Semiorders as Interval Orders

Axioms
We characterize the upper semicontinuous representability of a semiorder ≺ as an interval order (namely, by a pair (u,v) of upper semicontinuous real-valued functions) on a topological space with a countable basis of open sets, where one of the ...
Gianni Bosi, Gabriele Sbaiz, Magalì Zuanon   +2 more
doaj   +1 more source

Wong-Zakai approximations and long term behavior of second order non-autonomous stochastic lattice dynamical systems with additive noise

AIMS Mathematics, 2022
In this article, we investigate the Wong-Zakai approximations of a class of second order non-autonomous stochastic lattice systems with additive white noise.
Xintao Li
doaj   +1 more source

Screening for breakthroughs

Theoretical 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

Second order perturbation theory for embedded eigenvalues

, 2010
We study second order perturbation theory for embedded eigenvalues of an abstract class of self-adjoint operators. Using an extension of the Mourre theory, under assumptions on the regularity of bound states with respect to a conjugate operator, we prove
B. Simon, E. Balslev, E. Skibsted, E. Skibsted, E.B. Davies, J. Aguilar, J. Dereziński, J. Dereziński, J. Faupin, J. Fröhlich, J. S. Møller, J.S. Møller, K. Yosida, L. Bruneau, L. Cattaneo, L. Cattaneo, M. Hübner, S. Agmon, S. Golénia, S. Golénia, T. Kato, V. Bach, V. Bach, V. Georgescu, V. Georgescu, V. Georgescu, V. Jakšić, W. Amrein, W. Hunziker   +28 more
core   +1 more source

Nonrecursive dynamic incentives: A rate of convergence approach

Theoretical Economics, Volume 20, Issue 4, Page 1461-1520, November 2025.
In repeated principal‐agent problems and games, more outcomes are implementable when performance signals are privately observed by a principal or mediator with commitment power than when the same signals are publicly observed and form the basis of a recursive equilibrium. We investigate the gains from nonrecursive equilibria (e.g., “review strategies”)
Takuo Sugaya, Alexander Wolitzky
wiley   +1 more source