Sur les extensions lineaires d'une famille particuliere d'ordres partiels |
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Authors: | G Kreweras |
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Institution: | Institut de Statistique, 4, place Jussieu, 75005 Paris, France |
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Abstract: | Corners are defined as ideals of an ordered integer half-dihedron; the paper develops a method of enumeration of the linear extensions of a given corner by means of an alternating sum of products of trinomials. The main result substantially generalizes previously known results and is by itself the starting point of generalizations to some further ordered sets. |
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