© 1997 by London Mathematical Society
© The London Mathematical Society
Isoperimetric Inequalities in Nilpotent Groups
Laboratoire de Mathematiques E. Picard, Université Paul Sabatier 118 route de Narbonne, 31062 Toulouse Cedex 4, France. E-mail: pittet{at}picard.ups-tlse.fr
Received 14 April 1994. Revision received 1 May 1995.
To each finitely generated nilpotent group
, we associate an integer d and show that the 2-dimensional isoperimetric function (the Dehn function) of
is bounded below by a polynomial function of degree d. In the case of free nilpotent groups of class c we find (if we exclude Z) that d=c+1.