Results 71 to 80 of about 835 (208)
Nonemptiness of the Alpha‐Core
Journal of Public Economic Theory, Volume 28, Issue 1, February 2026.ABSTRACT We prove nonemptiness of the α $\alpha $‐core for balanced games with nonordered preferences, extending and generalizing in several aspects the results of Scarf (1971), Border (1984), Florenzano (1989), Yannelis (1991b), and Kajii (1992). In particular, we answer an open question in Kajii (1992) regarding the applicability of the nonemptiness ...
V. Filipe Martins‐da‐Rocha +1 more
wiley +1 more source
Upper Semicontinuous Collections of Continua in Class W [PDF]
Proceedings of the American Mathematical Society, 1983 A continuum is proven to be in Class W W if it can be decomposed into an upper semicontinuous collection of
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On semicontinuity of convex-valued multifunctions and Cesari’s property (Q [PDF]
, 2005 We introduce semicontinuity concepts for functions f with values in the space C(Y) of closed convex subsets of a finite dimensional normed vector space Y by appropriate notions of upper and lower limits. We characterize the upper semicontinuity of f: X →
Andreas Löhne
core
Efficiency in Pure‐Exchange Economies With Risk‐Averse Monetary Utilities
Mathematical Finance, Volume 36, Issue 1, Page 99-117, January 2026.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
Journal of Applied Mathematics, Volume 2026, Issue 1, 2026.We derive quantitative convergence rates for nonlocal‐to‐local limits in a class of multispecies interaction systems with finite‐range kernels. The nonlocal model consists of coupled aggregation–diffusion equations in which intra‐ and interspecies interactions are mediated by short‐range convolution operators.
S. C. Oukouomi Noutchie, John Venetis
wiley +1 more source
Upper semicontinuity of the lamination hull [PDF]
ESAIM: Control, Optimisation and Calculus of Variations, 2018 Let K ⊆ ℝ2×2 be a compact set, let Krc be its rank-one convex hull, and let L (K) be its lamination convex hull. It is shown that the mapping K ↦ L̅(K̅) is not upper semicontinuous on the diagonal matrices in ℝ2×2, which was a problem left by Kolář. This is followed by an example of a 5-point set of 2 × 2 symmetric matrices with non-compact lamination
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Journal of Function Spaces, Volume 2026, Issue 1, 2026.In this paper, we develop a comprehensive analytical framework for generalized nonlinear, nonhomogeneous Volterra integral equations and fractional differential equations in b‐metric spaces equipped with amorphous binary relations. By introducing an enriched (f, ϕ, ψ, s)‐functional contraction, we extend classical contractive conditions to accommodate ...
D. Srinivasan +2 more
wiley +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.
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Mathematics, 2020 In this paper, two types of set-valued symmetric generalized strong vector quasi-equilibrium problems with variable ordering structures are discussed.
Jing-Nan Li, San-Hua Wang, Yu-Ping Xu
doaj +1 more source
New Continuity Structures for Fuzzy Multifunctions via υ‐Fuzzy γ‐Open Sets and Fuzzy Ideals
Journal of Mathematics, Volume 2026, Issue 1, 2026.This study introduces several new classes of continuity for fuzzy multifunctions based on υ‐fuzzy γ‐open sets, namely fuzzy upper γ‐continuity (F+γ‐continuity), fuzzy lower γ‐continuity (F−γ‐continuity), fuzzy upper almost γ‐continuity (F+Aγ‐continuity), fuzzy lower almost γ‐continuity (F−Aγ‐continuity), fuzzy upper weakly γ‐continuity (F+Wγ‐continuity)
Fahad Alsharari +4 more
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