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Автор: Jesse Russel
Год: 2012
Издание:
Книга по Требованию
Страниц: 132
ISBN: 9785513579694
High Quality Content by WIKIPEDIA articles! In mathematics, in the branch of combinatorics, a graded poset, sometimes called a ranked poset (but see the article for an alternative meaning), is a partially ordered set (poset) P equipped with a rank function ? from P to N compatible with the ordering (so ?(x)
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