Results 61 to 70 of about 128 (122)

A Survey on Renorming and Set Convergence

open access: yes, 1995
. This article presents a survey of some recent results relating set convergence and renorming. We focus most of our attention on norms having various Kadec--Klee properties and their interplay with certain forms of set convergence including Wijsman and ...
Jon D. Vanderwerff   +3 more
core   +1 more source

Some extermal properties of section spaces of banach bundles and their duals, II

open access: yes, 2004
unavailable at this time...Mathematics Subject Classification (1991): 46B20, 46E40, 46H25.Key words: Banach bundle; section space; weak-* points of continuity Quaestiones Mathematicae 26(2003), 57 ...
Robbins, D.A., Hõim, Terje
core  

Approximate best proximity point sequences for C*λ mappings in strictly convex Banach spaces

open access: yes, 2021
Let A and B be nonempty subsets of a Banach space X and T : A → B be a non-self mapping. An approximate sequence of best proximity points for the mapping T is a sequence {xn } in ...
Gabeleh, M.   +2 more
core  

On estimates of the generalized Jordan-von Neumann constant of Banach spaces

open access: yes, 2006
. In this paper, we study the generalized Jordan-von Neumann constant and obtain its estimates for the normal structure coefficient N(X), improving the known results of S. Dhompongsa. Key words and phrases: Generalized Jordan-von Neumann constant; Normal
Changsen Yang, Fenghui Wang
core  

Remark on the Daugavet property for complex Banach spaces

open access: yesDemonstratio Mathematica
In this article, we study the Daugavet property and the diametral diameter two properties (DD2Ps) in complex Banach spaces. The characterizations for both Daugavet and Δ\Delta -points are revisited in the context of complex Banach spaces. We also provide
Lee Han Ju, Tag Hyung-Joon
doaj   +1 more source

On Moduli of Convexity in Banach Spaces

open access: yes, 2004
We provide an example to show that the moduli of convexity δ E and β E are different. Our example allows us to prove that 2 is the best possible constant in the inequality δE ≤ βE ≤ 2δE and that βE does not need ...
Gurariy, Vladimir   +3 more
core  

Densely Two-Valued Metric Projections in Uniformly Convex Banach Spaces

open access: yes, 1994
[Zhivkov N. V.; Живков Н. В.]For every uniformly convex Banach space X with dim X ≥ 2 there is a residual set U in the Hausdorff metric space B(X) of hounded and closed sets in X such that a metric projection generated by a set from U is two-valued and ...
Zhivkov, N. V.
core   +1 more source

Angular measures and Birkhoff orthogonality in Minkowski planes. [PDF]

open access: yesAequ Math, 2020
Naszódi M, Prokaj V, Swanepoel K.
europepmc   +1 more source

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