- countably
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a) In a countable manner; in a way that can be counted.b) In a way that can be put into one-to-one correspondence with the natural numbers or any subset thereof.
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countably
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countably — ˈkau̇n(t)əblē adverb : in a way that is countable a countably infinite subset … Useful english dictionary
Countably generated space — In mathematics, a topological space X is called countably generated if the topology of X is determined by the countable sets in a similar way as the topology of a sequential space (or a Fréchet space) by the convergent sequences. The countable… … Wikipedia
Countably compact space — In mathematics a topological space is countably compact if every countable open cover has a finite subcover. Examples and Properties A compact space is countably compact. Indeed, directly from the definitions, a space is compact if and only if it … Wikipedia
Countably generated — In mathematics, the term countably generated can have several meanings: An algebraic structure (group, module, algebra) having countably many generators, see generating set (disambiguation) Countably generated space, a topological space in which… … Wikipedia
countably — adverb see countable … New Collegiate Dictionary
countably — See countability. * * * … Universalium
countably — adv. in a way that enables counting … English contemporary dictionary
countably — count·ably … English syllables
countably additive function — Math. a set function that upon operating on the union of a countable number of disjoint sets gives the same result as the sum of the functional values of each set. Cf. finitely additive function. * * * … Universalium
countably compact set — Math. a set for which every cover consisting of a countable number of sets has a subcover consisting of a finite number of sets. * * * … Universalium
