Qiu, Wei Yuan et al., The discrete subgroups and Jørgensen.s inequality for SL(m,. p ), Acta mathematica Sinica. English series (Print) , 29(3), 2013, pp. 417-428
In this paper, we give discreteness criteria of subgroups of the special linear group on . p or . p in two and higher dimensions. Jørgensen.s inequality gives a necessary condition for a non-elementary group of Möbius transformations to be discrete. We give a version of Jørgensen.s inequality for SL(m,. p ).