Sign-Balanced Posets
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Dennis E. White
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Article
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2001
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Elsevier Science
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English
β 345 KB
Let P be a finite partially ordered set with a fixed labeling. The sign of a linear extension of P is its sign when viewed as a permutation of the labels of the elements of P. Call P sign-balanced if the number of linear extensions of P of positive sign is the same as the number of linear extensions