27 search results - page 2 / 6 » Countable connected-homogeneous graphs |
COMBINATORICS
2006
13 years 5 months ago
2006
We investigate the existence of edge-magic labellings of countably infinite graphs by abelian groups. We show for that for a large class of abelian groups, including the integers ...
CPC
2006
13 years 5 months ago
2006
We study relational structures (especially graphs and posets) which satisfy the analogue of homogeneity but for homomorphisms rather than isomorphisms. The picture is rather diffe...
CSL
2005
Springer
13 years 11 months ago
2005
Springer
We show that the modular decomposition of a countable graph can be defined from this graph, given with an enumeration of its set of vertices, by formulas of Monadic Second-Order l...
DM
2010
13 years 5 months ago
2010
COMBINATORICA
2006
13 years 5 months ago
2006
Given a universal binary countable homogeneous structure U and n , there is a partition of the induced n-element substructures of U into finitely many classes so that for any par...