On suborbital graphs for the modular group

Akbas M.

BULLETIN OF THE LONDON MATHEMATICAL SOCIETY, vol.33, pp.647-652, 2001 (SCI-Expanded) identifier identifier


This paper proves a conjecture of G, A. Jones, D, Singerman and K. Wicks, that a suborbital graph for the modular group is a forest if and only if it contains no triangles.