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math.CO2010
On the computational complexity of degenerate unit distance representations of graphs
Jan Kratochvil, Boris Horvat, Tomaz Pisanski
Some graphs admit drawings in the Euclidean k-space in such a (natu- ral) way, that edges are represented as line segments of unit length. Such drawings will be called k dimensiona…
math.CO2005
On the Number of Hamiltonian Groups
Boris Horvat, Gašper Jaklič, Tomaž Pisanski
Finite hamiltonian groups are counted. The sequence of numbers of all groups of order all whose subgroups are normal and the sequence of numbers of all groups of order less or…