Results 71 to 80 of about 321 (179)
Characterization of Best Approximation Points with Lattice Homomorphisms
Journal of Mathematical Extension, 2014 In this paper we prove some characterization theorems in the theory of best approximation in Banach lattices. We use a new idea for finding the best approximation points in an ideal.
H. R. Khademzadeh, H. Mazaheri
doaj
, 2023 The main goal of this thesis is to find conditions, under which, Banach Lattices are isomorphic either to C(K), where K is compact, or to L1(μ), with respect to the measure μ. In Chapter 1, we give some basic notations and definitions for vector lattices.
openaire +1 more source
Finite Dimensional Chebyshev Subspaces of Lo
Sultan Qaboos University Journal for Science, 2017 If A is a subset of the normed linear space X, then A is said to be proximinal in X if for each xÎX there is a point y0ÎA such that the distance between x and A; d(x, A) = inf{||x-y||: yÎA}= ||x-y0||.
Aref K. Kamal
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Abstract and Applied Analysis, 2013 We will give the -Lipschitz version of the Banach-Stone type theorems for lattice-valued -Lipschitz functions on some metric spaces. In particular, when and are bounded metric spaces, if is a nonvanishing preserver, then is a weighted composition ...
Dongyang Chen +3 more
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Abstract and Applied Analysis, 2014 Using fixed point theorems in ordered Banach spaces with the lattice structure, we consider the existence of nontrivial solutions under the condition that the nonlinear term can change sign and study the existence of sign-changing solutions for some ...
Hongyu Li
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Haar null closed and convex sets in separable Banach spaces. [PDF]
Bull Lond Math Soc, 2023 Ravasini D.
europepmc +1 more source
Periodic Lorentz gas with small scatterers. [PDF]
Probab Theory Relat Fields, 2023 Bálint P, Bruin H, Terhesiu D.
europepmc +1 more source
Sätze vom Bohman-Korovkin-Typ für lokalkonvexe Vektorverbände
Journal of Numerical Analysis and Approximation Theory, 2015 Two Korovkin-type theorems inspired by the work of Scheffold are given concerning the approximation of a continuous lattice homomorphism \(P\) by a sequence of certain positive linear operators \(T_n\). The first result is used to prove a generalization
Heiner Gonska
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Free Banach lattices under convexity conditions. [PDF]
Rev R Acad Cienc Exactas Fis Nat A Mat, 2022 Jardón-Sánchez H +4 more
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Trotter Product Formulae for ∗ -Automorphisms of Quantum Lattice Systems. [PDF]
Ann Henri Poincare, 2022 Bachmann S, Lange M.
europepmc +1 more source