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In a recent paper, Dimca and Némethi pose the problem of finding a homogeneous
polynomial f such that the homology of the complement of the hypersurface defined
by f is torsion-free, but the homology of the Milnor fiber of f has torsion. We prove
that this is indeed possible, and show by construction that, for each prime p, there
is a polynomial with p–torsion in the homology of the Milnor fiber. The
techniques make use of properties of characteristic varieties of hyperplane
arrangements.
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