نتایج جستجو برای: hahn banach theorem

تعداد نتایج: 159134  

Journal: :Topology and its Applications 2023

It is well known due to Hahn and Mazurkiewicz that every Peano continuum a continuous image of the unit interval. We prove an assignment, which takes as input produces output mapping whose range continuum, can be realized in Borel measurable way. Similarly, we find assignment any nonempty compact metric space assigns from Cantor set onto space. To this end use Burgess selection theorem. Finally...

In this paper, we first establish a new fixed point theorem for a Meir-Keeler type condition. As an application, we derive a simultaneous generalization of Banach contraction principle, Kannan's fixed point theorem, Chatterjea's fixed point theorem and other fixed point theorems. Some new fixed point theorems are also obtained.

S. Belarbi Z. Dahmani

In this paper, we study the existence of solutions for fractional evolution equations with nonlocalconditions. These results are obtained using Banach contraction xed point theorem. Other resultsare also presented using Krasnoselskii theorem.

2010
JONATHAN M. BORWEIN

A self-contained and brief proof is given of the equivalence of the Hahn-Banach extension property (HB) and the conditional order completeness of the range space (LUB). Various other equivalences are discussed.

Journal: :Axioms 2013
Sergey Ajiev

We introduce and study Clarkson, Dol’nikov-Pichugov, Jacobi and mutual diameter constants reflecting the geometry of a Banach space and Clarkson, Jacobi and Pichugov classes of Banach spaces and their relations with James, self-Jung, Kottman and Schäffer constants in order to establish quantitative versions of Hahn-Banach separability theorem and to characterise the isometric extendability of H...

Journal: :Bulletin of the Australian Mathematical Society 1977

Journal: :Proceedings of the American Mathematical Society 1977

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