منابع مشابه
Joint Extensions in Families of Contractive Commuting Operator Tuples
In this paper we systematically study extension questions in families of commuting operator tuples that are associated with the unit ball in C.
متن کاملCommuting Contractive Operators
We proved that a finite commuting Boyd-Wong type contractive family with equicontinuous words have the approximate common fixed point property. We also proved that given X Ă R, compact and convex subset, F : X Ñ X a compact-and-convex valued Lipschitz correspondence and g an isometry on X, then gF “ F g implies F admits a Lipschitz selection commuting with g.
متن کاملOn contractive families and a fixed-point question of Stein
The following conjecture generalizing the Contraction Mapping Theorem was made by Stein in [9]: Let (X, ρ) be a complete metric space and let F = {T1, . . . , Tn} be a finite family of self-maps of X. Suppose there is a constant γ ∈ (0, 1) such that for any x, y ∈ X there exists T ∈ F with ρ(T (x), T (y)) ≤ γρ(x, y). Then some composition of members of F has a fixed point. In this paper we disp...
متن کاملCommuting Families in Skew Fields and Quantization of Beauville’s Fibration
We construct commuting families in fraction fields of symmetric powers of algebras. The classical limit of this construction gives Poisson commuting families associated with linear systems. In the case of a K3 surface S, they correspond to lagrangian fibrations introduced by Beauville. When S is the canonical cone of an algebraic curve C, we construct commuting families of differential operator...
متن کاملCommon Fixed Points for Minimal Commuting Mappings Satisfying (ψ-φ)-contractive Conditions in Multiplicative Metric Spaces
In this paper, we prove common fixed point theorems for minimal commuting mappings satisfying (ψ-φ)-contractive conditions in multiplicative metric spaces. AMS Subject Classification: 47H10, 54H25
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Fundamenta Mathematicae
سال: 2015
ISSN: 0016-2736,1730-6329
DOI: 10.4064/fm231-3-2