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DM
2010
13 years 10 months ago
2010
The chromatic capacity of a graph G; CAP (G) ; is the largest integer k such that there is a k-colouring of the edges of G such that when the vertices of G are coloured with the s...
DM
2010
13 years 10 months ago
2010
In this paper we give a full characterization of the idomatic partitions of the direct product of three complete graphs. We also show how to use such a characterization in order t...
DM
2010
13 years 10 months ago
2010
A preorder consists of linearly ordered equivalence classes called blocks, and an alignment is a sequence of cycles on n labelled elements. We investigate the block structure of a...
DM
2010
13 years 10 months ago
2010
We consider point-line geometries having three points on every line, having three lines through every point (bislim geometries), and containing triangles. We classify such geometr...
DM
2010
13 years 10 months ago
2010
Abstract: Duality and chirality are examples of operations of order 2 on hypermaps. James showed that the groups of all operations on hypermaps and on oriented hypermaps can be ide...