Hyperplane arrangements, M-tame polynomials and twisted cohomology
نویسنده
چکیده
Let A = {H1, ..., Hd} be an affine essential hyperplane arrangement in C , see [OT1], [OT2] for general facts on arrangements. We set as usual M = M(A) = C\X, X being the union of all the hyperplanes in A. One of the main problems now in hyperplane arrangement theory is to study the cohomology of the complement M with coefficients in some local system L on M , see for instance the introduction and the references in [CDO] as well as [OT2]. A rank one local system L on M(A) corresponds to a homomorphism
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