Ai. Lichtman, THE SOLUBLE SUBGROUPS AND THE TITS ALTERNATIVE IN LINEAR-GROUPS OVER RINGS OF FRACTIONS OF POLYCYCLIC GROUP-RINGS .1., Journal of pure and applied algebra, 86(3), 1993, pp. 231-287
Let KH be a group ring of a polycyclic-by-finite group and let R be it
s Goldie ring of fractions. In this first paper in a series of two we
study the soluble subgroups of the linear group GL(n)(R) and show in p
articular that there exists a bound for their solubility class; we wil
l show in the second paper that the subgroups of GL(n)(R) satisfy the
Tits alternative.