172 search results - page 1 / 35 » The Complexity of Unions of Disjoint Sets |
STACS
2007
Springer
14 years 5 months ago
2007
Springer
This paper is motivated by the open question whether the union of two disjoint NPcomplete sets always is NP-complete. We discover that such unions retain much of the complexity of...
WEA
2010
Springer
14 years 5 months ago
2010
Springer
Abstract. The disjoint-set data structure is used to maintain a collection of non-overlapping sets of elements from a finite universe. Algorithms that operate on this data structu...
COCOON
2007
Springer
14 years 5 months ago
2007
Springer
We investigate the connection between propositional proof systems and their canonical pairs. It is known that simulations between proof systems translate to reductions between the...
SWAT
2004
Springer
14 years 4 months ago
2004
Springer
Let A and B be two sets of n resp. m disjoint unit disks in the plane, with m ≥ n. We consider the problem of finding a translation or rigid motion of A that maximizes the tota...
CCCG
2007
14 years 10 days ago
2007
Given a set of unit-discs in the plane with union area A, what fraction of A can be covered by selecting a pairwise disjoint subset of the discs? Rado conjectured