CORR
2010
Springer
14 years 7 months ago
2010
Springer
An old problem of Moser asks: how large of a union-free subfamily does every family of m sets have? A family of sets is called union-free if there are no three distinct sets in th...
74
Voted
COMBINATORICS
1998
14 years 10 months ago
1998
: Following Frankl and F¨uredi [1] we say a family, F, of subsets of an n-set is weakly union-free if F does not contain four distinct sets A, B, C, D with A ∪ B = C ∪ D. If i...