Oplysninger om | engelsk ord COUNTABILITY

Eksempler på brug af COUNTABILITY i en sætning

• Like the other axioms of countability, separability is a "limitation on size", not necessarily in terms of cardinality (though, in the presence of the Hausdorff axiom, this does turn out to be the case; see below) but in a more subtle topological sense.
• Other examples of mathematical objects obeying axioms of countability include sigma-finite measure spaces, and lattices of countable type.
• Other mathematicians such as Reuben Goodstein and Hao Wang have gone so far as to adopt what is called a "Skolemite" view: that not only does the Löwenheim-Skolem theorem prove that set-theoretic notions of countability are relative to a model, but that every set is countable from some "absolute" perspective.

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