Exact sequences, lower central series and representations of surface   braid groups
  We consider exact sequences and lower central series of surface braid groups and we explain how they can prove to be useful for obtaining representations for surface braid groups. In particular, using a completely algebraic framework, we describe the notion of extension of a representation introduced and studied recently by An and Ko and independently by Blanchet. 
Paolo Bellingeri (LMNO), Eddy Godelle (LMNO), John Guaschi (LMNO)
math.GT math.GR