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BIRTHDAY
2010
Springer
15 years 1 months ago
Fixed-Point Definability and Polynomial Time on Chordal Graphs and Line Graphs
The question of whether there is a logic that captures polynomial time was formulated by Yuri Gurevich in 1988. It is still wide open and regarded as one of the main open problems...
Martin Grohe
CN
2007
95views more  CN 2007»
15 years 20 days ago
Sampling large Internet topologies for simulation purposes
In this paper, we develop methods to ‘‘sample’’ a small realistic graph from a large Internet topology. Despite recent activity, modeling and generation of realistic graph...
Vaishnavi Krishnamurthy, Michalis Faloutsos, Marek...
WADS
2007
Springer
180views Algorithms» more  WADS 2007»
15 years 6 months ago
Spanners for Geometric Intersection Graphs
A ball graph is an intersection graph of a set of balls with arbitrary radii. Given a real number t > 1, we say that a subgraph G′ of a graph G is a t-spanner of G, if for eve...
Martin Fürer, Shiva Prasad Kasiviswanathan
DAM
2010
137views more  DAM 2010»
15 years 23 days ago
H-join decomposable graphs and algorithms with runtime single exponential in rankwidth
We introduce H -join decompositions of graphs, indexed by a fixed bipartite graph H . These decompositions are based on a graph operation that we call H -join, which adds edges be...
Binh-Minh Bui-Xuan, Jan Arne Telle, Martin Vatshel...
CAI
2007
Springer
15 years 6 months ago
From Algebraic Graph Transformation to Adhesive HLR Categories and Systems
In this paper, we present an overview of algebraic graph transformation in the double pushout approach. Basic results concerning independence, parallelism, concurrency, embedding, ...
Ulrike Prange, Hartmut Ehrig