Sciweavers

172 search results - page 4 / 35
» The Complexity of Unions of Disjoint Sets
Sort
View
COMBINATORICA
1998
94views more  COMBINATORICA 1998»
13 years 7 months ago
The Shannon Capacity of a Union
For an undirected graph G = (V, E), let Gn denote the graph whose vertex set is V n in which two distinct vertices (u1, u2, . . . , un) and (v1, v2, . . . , vn) are adjacent iff ...
Noga Alon
ICALP
2005
Springer
14 years 1 months ago
Union-Find with Constant Time Deletions
A union-find data structure maintains a collection of disjoint sets under makeset, union and find operations. Kaplan, Shafrir and Tarjan [SODA 2002] designed data structures for ...
Stephen Alstrup, Inge Li Gørtz, Theis Rauhe...
EJC
2007
13 years 7 months ago
Minimal paths and cycles in set systems
A minimal k-cycle is a family of sets A0, . . . , Ak−1 for which Ai ∩ Aj = ∅ if and only if i = j or i and j are consecutive modulo k. Let fr(n, k) be the maximum size of a ...
Dhruv Mubayi, Jacques Verstraëte
COMPGEOM
2009
ACM
14 years 2 months ago
Epsilon nets and union complexity
We consider the following combinatorial problem: given a set of n objects (for example, disks in the plane, triangles), and an integer L ≥ 1, what is the size of the smallest su...
Kasturi R. Varadarajan
COMPGEOM
2010
ACM
14 years 22 days ago
Better bounds on the union complexity of locally fat objects
We prove that the union complexity of a set of n constantcomplexity locally fat objects (which can be curved and/or non-convex) in the plane is O(λt+2(n) log n), where t is the m...
Mark de Berg