CORR
2011
Springer
12 years 11 months ago
2011
Springer
The complexity of the isomorphism problem for regular trees, regular linear orders, and regular words is analyzed. A tree is regular if it is isomorphic to the prefix order on a r...
LICS
2010
IEEE
13 years 2 months ago
2010
IEEE
Several new undecidability results on isomorphism problems for automatic structures are shown: (i) The isomorphism problem for automatic equivalence relations is 0 1complete. (ii)...
CORR
2008
Springer
13 years 4 months ago
2008
Springer
The isomorphism problem for planar graphs is known to be efficiently solvable. For planar 3-connected graphs, the isomorphism problem can be solved by efficient parallel algorithm...
MFCS
2007
Springer
13 years 10 months ago
2007
Springer
A tournament is a graph in which each pair of distinct vertices is connected by exactly one directed edge. Tournaments are an important graph class, for which isomorphism testing ...
STACS
2010
Springer
13 years 11 months ago
2010
Springer
The Graph Isomorphism problem restricted to graphs of bounded treewidth or bounded tree distance width are known to be solvable in polynomial time [2],[19]. We give restricted spa...