Bull. Korean Math. Soc. 2005 Vol. 42, No. 3, 555-561 Printed September 1, 2005
Wong Peng Choon and Wong Kok Bin University of Malaya, University of Malaya
Abstract : In this note we give characterizations for certain HNN extensions with central associated subgroups to be residually finite. We then apply our results to HNN extensions of polycyclic-by-finite groups.
Keywords : HNN extensions, residually finite, polycyclic-by-finite groups, abelian groups