On the fundamental group of the complement of a complex hyperplane arrangement
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منابع مشابه
On the Fundamental Group of the Complement of a Complex Hyperplane Arrangement
We construct two combinatorially equivalent line arrangements in the complex projective plane such that the fundamental groups of their complements are not isomorphic. In the proof we use a new invariant of the fundamental group of the complement of a line arrangement with prescribed combinatorial type with respect to isomorphisms inducing the canonical isomorphism of first homology groups.
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