488 search results - page 60 / 98 » Automorphic Decompositions of Graphs |
DM
2006
13 years 7 months ago
2006
A computer package is being developed at Bayreuth for the generation and investigation of discrete structures. The package is a C and C++ class library of powerful algorithms endow...
CP
2010
Springer
13 years 5 months ago
2010
Springer
Abstract. We study the lattice structure of sets (monoids) of surjective hyper-operations on an n-element domain. Through a Galois connection, these monoids form the algebraic coun...
NETWORKS
2011
12 years 10 months ago
2011
A graph is terminal ∆ − Y -reducible if, it can be reduced to a distinguished set of terminal vertices by a sequence of series-parallel reductions and ∆−Y -transformations...
ICALP
2003
Springer
14 years 29 days ago
2003
Springer
The (k, r)-center problem asks whether an input graph G has ≤ k vertices (called centers) such that every vertex of G is within distance ≤ r from some center. In this paper we ...
STOC
2010
ACM
14 years 18 days ago
2010
ACM
We give the first polynomial-time approximation scheme (PTAS) for the Steiner forest problem on planar graphs and, more generally, on graphs of bounded genus. As a first step, w...