Surface framed braids.

link: http://arxiv.org/abs/1001.4471
Abstract

In this paper we introduce the framed pure braid group on $n$ strands of an
oriented surface, a topological generalisation of the pure braid group $P_n$.
We give different equivalents definitions for framed pure braid groups and we
study exact sequences relating these groups with other generalisations of
$P_n$, usually called surface pure braid groups. The notion of surface framed
braid groups is also introduced.