Voorbeelden van het gebruik van Metric space in het Engels en hun vertalingen in het Nederlands
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More generally, all metric spaces are Hausdorff.
But how to prove the change of metric spaces?
In 1906 Maurice Fréchet introduced metric spaces in his work Sur quelques points du calcul fonctionnel.
The notion of a triangle makes senses in metric spaces, and this gives rise to CAT(k) spaces. .
More generally, the condition can be formulated for functions between any two metric spaces.
limit point compactness, can be developed in general metric spaces.
It is widely applicable since all metric spaces and all compact Hausdorff spaces are normal.
The course is divided into two parts: metric spaces, and measurement and integration theory.
Additionally, some spaces that are not complete metric spaces in the usual metric may be Polish; e.g.,
BCT2 for arbitrary complete metric spaces require some form of the axiom of choice;
The uniform structures induced by equivalent norms on a vector space are uniformly isomorphic. homeomorphism is an isomorphism between topological spaces isometric isomorphism is an isomorphism between metric spaces John L. Kelley,
However, the two definitions cease to be equivalent when we consider subsets of more general metric spaces and in this generality only the latter property is used to define compactness.
The first states that every distance-preserving map(i.e., an isometry of metric spaces) between two connected Riemannian manifolds is actually a smooth isometry of Riemannian manifolds.
detailed proofs were published by Ballmann(1990) for metric spaces of non-positive curvature
If such a space is complete(as a metric space) then it is called a Banach space. .
A metric space is said to be locally compact if every point has a compact neighborhood.
For example, in a metric space with the discrete metric, one has formula_9 and formula_10, for any formula_11.
see metric space), then A is Lebesgue-measurable.
In a first-countable space(such as a metric space), it is enough to consider only convergent sequences, instead of all nets.
BCT3 A non-empty complete metric space, or any of its subsets with nonempty interior, is not the countable union of nowhere-dense sets.