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EJC
1998
13 years 5 months ago
1998
For a digraph G = (V, E) let w(Gn ) denote the maximum possible cardinality of a subset S of V n in which for every ordered pair (u1, u2, . . . , un) and (v1, v2, . . . , vn) of m...
EJC
1998
13 years 5 months ago
1998
in Proceedings of EuroCG, Berlin, M¨arz 2001, pp. 142–145. [14] Branched coverings, triangulations, and 3-manifolds, (mit Ivan Izmestiev). Adv. Geometry, 3:191–225, 2003. [15]...
EJC
1998
13 years 5 months ago
1998
A hierarchy of classes of graphs is proposed which includes hypercubes, acyclic cubical complexes, median graphs, almost median graphs, premedian graphs and partial cubes. Structu...
EJC
2008
13 years 5 months ago
2008
Gerards and Seymour (see [T.R. Jensen, B. Toft, Graph Coloring Problems, Wiley-Interscience, 1995], page 115) conjectured that if a graph has no odd complete minor of order p, the...