On the MΓΆbius Number of the Subgroup Lat
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John Shareshian
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Article
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1997
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Elsevier Science
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English
β 460 KB
In this paper, a formula is given for the Mo bius number +(1, S n ) of the subgroup lattice of the symmetric group S n . This formula involves the Mo bius numbers of certain transitive subgroups of S n . When n has at most two (not necessarily distinct) prime factors or n is a power of two, this for