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Search: id:A009997
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| A009997 |
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Comparative probability orderings on n elements arising from a probability distribution. Also (1/2^n n!) * number of regions of hyperplane arrangement with normals (0,1,-1)^n |
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+0
2
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OFFSET
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1,3
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REFERENCES
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T. Fine and J. Gill, Comparative probability relations, Ann. Prob. 4 (1976) 667-673.
D. Maclagan, Boolean Term Orders and the Root System B_n, Order 15 (1999), 279-295.
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LINKS
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D. Maclagan, [math/9809134] Boolean Term Orders and the Root System B_n
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CROSSREFS
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Cf. A005806.
Sequence in context: A102596 A050561 A135865 this_sequence A048137 A005806 A015184
Adjacent sequences: A009994 A009995 A009996 this_sequence A009998 A009999 A010000
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KEYWORD
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nonn,hard,nice
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AUTHOR
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njas
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EXTENSIONS
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a(6) and a(7) from Diane Maclagan and Michael Kleber (maclagan(AT)math.berkeley.edu, kleber(AT)brandeis.edu)
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