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arXiv · 0904.4472

An explicit derivation of the Mobius function for Bruhat order

Brant C. Jones
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Abstract

We give an explicit nonrecursive complete matching for the Hasse diagram of the strong Bruhat order of any interval in any Coxeter group. This yields a new derivation of the Mobius function, recovering a classical result due to Verma.

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Brant C. Jones. 2009-12-11. An explicit derivation of the Mobius function for Bruhat order. https://arxiv.org/abs/0904.4472

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