Displaying similar documents to “A generalization of fixed point theorems in S -metric spaces”

On the gluing of hyperconvex metrics and diversities

Bożena Piątek (2014)

Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica

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In this work we consider two hyperconvex diversities (or hyperconvex metric spaces) (X, δX) and (Y, δY ) with nonempty intersection and we wonder whether there is a natural way to glue them so that the new glued diversity (or metric space) remains being hyperconvex. We provide positive and negative answers in both situations.

The universal separable metric space of Urysohn and isometric embeddings thereof in Вanach spaces

M. Holmes (1992)

Fundamenta Mathematicae

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This paper is an investigation of the universal separable metric space up to isometry U discovered by Urysohn. A concrete construction of U as a metric subspace of the space C[0,1] of functions from [0,1] to the reals with the supremum metric is given. An answer is given to a question of Sierpiński on isometric embeddings of U in C[0,1]. It is shown that the closed linear span of an isometric copy of U in a Banach space which contains the zero of the Banach space is determined up to...