Mathematics – Algebraic Geometry
Scientific paper
1995-03-07
Journal of Pure and Applied Algebra 126 (1998), no. 1-3, 87-120
Mathematics
Algebraic Geometry
31 pages. AMSTeX v 2.1 preprint style
Scientific paper
10.1016/S0022-4049(96)00153-3
Let $G$ be a group which admits the structure of an iterated semidirect product of finitely generated free groups. We construct a finite, free resolution of the integers over the group ring of $G$. This resolution is used to define representations of groups which act compatibly on $G$, generalizing classical constructions of Magnus, Burau, and Gassner. Our construction also yields algorithms for computing the homology of the Milnor fiber of a fiber-type hyperplane arrangement, and more generally, the homology of the complement of such an arrangement with coefficients in an arbitrary local system.
Cohen Daniel C.
Suciu Alexander I.
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