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MLQ
2008
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Groupwise density cannot be much bigger than the unbounded number
We prove that g (the groupwise density number) is smaller or equal to b+, the successor of the minimal cardinality of an unbounded subset of . This is true even for the version of ...
Saharon Shelah
COMBINATORICS
2007
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13 years 11 months ago
Lower Bounds for the Football Pool Problem for 7 and 8 Matches
Let k3(n) denote the minimal cardinality of a ternary code of length n and covering radius one. In this paper we show k3(7) ≥ 156 and k3(8) ≥ 402 improving on the best previou...
Wolfgang Haas