Direct Images Of Locally Constant Sheaves on Complements to Plane Line Arrangements
University dissertation from Stockholm : Department of Mathematics
Abstract: On the complement (where each is a line passing through the origin) to a plane line arrangement , a locally constant sheaf of complex vector spaces is given by a multi-index . Using the description of Mac-Pherson and Vilonen ([11] and [12]) we obtain a criterion for the irreducibility of the direct image as a perverse sheaf, where is the canonical inclusion.
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