フィルター (数学)
1. Filter (mathematics)In mathematics, a filter is a special subset of a partially ordered set. A frequently used special case is the situation that the ordered set under consideration is just the power set of some set, ordered by set inclusion. Filters appear in order and lattice theory, but can also be found in topology whence they originate. The dual notion of a filter is an ideal.
Read “Filter (mathematics)” on English Wikipedia
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Read “Filter (mathematics)” on English Wikipedia
Read “フィルター (数学)” on Japanese Wikipedia
Read “Filter (mathematics)” on DBpedia
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