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» Decidability of string graphs
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KR
2004
Springer
15 years 2 months ago
Improving the Forward Chaining Algorithm for Conceptual Graphs Rules
Simple Conceptual Graphs (SGs) are used to represent entities and relations between these entities: they can be translated into positive, conjunctive, existential first-order log...
Jean-François Baget
74
Voted
DM
2010
128views more  DM 2010»
14 years 9 months ago
Some remarks on the geodetic number of a graph
A set of vertices D of a graph G is geodetic if every vertex of G lies on a shortest path between two not necessarily distinct vertices in D. The geodetic number of G is the minimu...
Mitre Costa Dourado, Fábio Protti, Dieter R...
IPL
2002
95views more  IPL 2002»
14 years 9 months ago
On a game in directed graphs
Inspired by recent algorithms for electing a leader in a distributed system, we study the following game in a directed graph: each vertex selects one of its outgoing arcs (if any)...
Alan J. Hoffman, Kate Jenkins, Tim Roughgarden
85
Voted
JSYML
2010
95views more  JSYML 2010»
14 years 4 months ago
Some natural decision problems in automatic graphs
For automatic and recursive graphs, we investigate the following problems: (A) existence of a Hamiltonian path and existence of an infinite path in a tree (B) existence of an Euler...
Dietrich Kuske, Markus Lohrey
78
Voted
SOFSEM
2010
Springer
15 years 6 months ago
Mixing Coverability and Reachability to Analyze VASS with One Zero-Test
We study Vector Addition Systems with States (VASS) extended in such a way that one of the manipulated integer variables can be tested to zero. For this class of system, it has bee...
Alain Finkel, Arnaud Sangnier