Electronic Resource
Springer
Combinatorica
12 (1992), S. 287-293
ISSN:
1439-6912
Keywords:
05 D 05
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mathematics
Notes:
Abstract The level sequence of a Sperner familyF is the sequencef(F)={f i (F)}, wheref i (F) is the number ofi element sets ofF . TheLYM inequality gives a necessary condition for an integer sequence to be the level sequence of a Sperner family on ann element set. Here we present an indexed family of inequalities that sharpen theLYM inequality.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01285817
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