engelska-norska översättning av filter

A device which separates a suspended, dissolved, or particulate matter from a fluid, solution, or other substance; any device that separates one substance from another
Any item, mechanism, device or procedure that acts to separate or isolate
self-restraint in speech
A non-empty upper set which is closed under binary infima (a.k.a. meets
To sort, sift, or isolate
To diffuse; to cause to be less concentrated or focused
To pass through a filter or to act as though passing through a filter
To move slowly or gradually; to come or go a few at a time
To ride a motorcycle between lanes on a road

He runs an email filter to catch the junk mail
Hes got no filter, and hes always offending people as a result
The collection of cofinite subsets of ℝshould not be italicized is a filter under inclusion: it includes the intersection of every pair of its members, and includes every superset of every cofinite set.
If (1) the universal set (here, the set of natural numbers) were called a "large" set, (2) the superset of any "large" set were also a "large" set, and (3) the intersection of a pair of "large" sets were also a "large" set, then the set of all "large" sets would form a filter.

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