Results 81 to 90 of about 23,112 (257)

The Bregman–Opial Property and Bregman Generalized Hybrid Maps of Reflexive Banach Spaces

open access: yesMathematics, 2020
The Opial property of Hilbert spaces is essential in many fixed point theorems of non-expansive maps. While the Opial property does not hold in every Banach space, the Bregman–Opial property does.
Eskandar Naraghirad   +2 more
doaj   +1 more source

On the Existence of Solutions of Dynamic Equations on Time Scales in Banach Spaces

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this paper we address the question of solvability of dynamic equations on time scales in Banach spaces. In particular, our main theorem extends the result for classical differential equations in Banach spaces of Banaś and Goebel established in [5], to an arbitrary time scale.
Dušan Oberta
wiley   +1 more source

On the theory of Banach space valued multifunctions. 1. Integration and conditional expectation

open access: yes, 1985
Banach space valued multifunctions defined on a complete σ-finite measure space (Ω, Σ, μ) are studied. Their set valued integral is defined and its properties are examined.
Papageorgiou, Nikolaos S   +1 more
core   +1 more source

General Variational Formulation of Axisymmetric Capillary Bridges: Modeling Contact Angle Hysteresis and Capillary Forces

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT This work presents a general framework for deriving the Young–Laplace equation and the Young's equations for an axisymmetric capillary bridge between two parallel plates by minimizing the system's total energy. These Young's equations naturally emerge as boundary conditions associated with the Young–Laplace equation.
Olivier Millet   +3 more
wiley   +1 more source

New asymptotically isometric properties that imply the failure of the fixed point property in copies of 1

open access: yesMiskolc Mathematical Notes
In this study, we introduce three new notions which may occur for some Banach spaces. We call these new properties AAI1, AAI2 and AAI3 where AAI stands for “alternative asymptotically isometric”.
Shilpa Das, Veysel Nezir, Aysun Güven
doaj   +1 more source

Some extremal properties of section spaces of Banach bundles and their duals

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
When X is a compact Hausdorff space and E is a real Banach space there is a considerable literature on extremal properties of the space C(X,E) of continuous E-valued functions on X. What happens if the Banach spaces in which the functions on X take their
D. A. Robbins
doaj   +1 more source

A ninny, an idiot and an economic theorist

open access: yesEconomica, EarlyView.
Abstract Anton Chekhov's story ‘The ninny’ meets the question: ‘What is the meaning of economic theory?’
Ariel Rubinstein
wiley   +1 more source

On the convexity of the weakly compact Chebyshev sets in Banach spaces

open access: yes, 2000
A sufficient condition for a Banach space X is given so that every weakly compact Chebyshev subset of X is convex. For this purpose a class broader than that of smooth Banach spaces is defined. In this way a former result of A. Brondsted and A. L.
Kanellopoulos, V
core   +1 more source

Complemented subspaces of p-adic second dual Banach spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1995
Let K be a non-archimedean non-trivially valued complete field. In this paper we study Banach spaces over K. Some of main results are as follows: (1) The Banach space BC((l∞)1) has an orthocomplemented subspace linearly homeomorphic to c0. (2) The Banach
Takemitsu Kiyosawa
doaj   +1 more source

RETRO K-BANACH FRAMES IN BANACH SPACES

open access: yesPoincare Journal of Analysis and Applications, 2018
Summary: The notions of $K$-frame and atomic system in Hilbert spaces were recently introduced by \textit{L. Găvruţa} [Appl. Comput. Harmon. Anal. 32, No. 1, 139--144 (2012; Zbl 1230.42038)]. In this paper, we extend these notions to a Banach space setting, define $K$-retro Banach frames in Banach spaces and observe that $K$-retro Banach frame is a ...
Shekhar, Chander   +2 more
openaire   +2 more sources

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