Finiteness conditions for groups and monoids
Juan Alonso, Susan Hermiller
(
Click here for pdf version )
For a group with homotopical
finiteness ${\cal F}_n$, there is a
$K(\pi,1)$ whose universal cover admits
a group action with finite fundamental
domain for the action on the $n$-skeleton.
Squier's property of finite derivation type
corresponds to an action up to dimension
$n=3$ in which the fundamental domain
consists of ``directed'' cells. This
property can then be applied to monoids
as well as groups, and for groups it is
equivalent to ${\cal F}_3$. In this talk
I will discuss a homological analog of the
definition of finite derivation type, an
extension of this to higher dimensions, and
connections to other finiteness conditions.
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