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The purpose of this workshop was to bring together researchers with a common interest in the objects mentioned in the title from, respectively, the points of view of toric and tropical geometry, arrangement theory, and geometric group theory.
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Graham Denham, Alexander I. Suciu, Mini-Workshop: Cohomology Rings and Fundamental Groups of Hyperplane Arrangements, Wonderful Compactifications, and Real Toric Varieties. Oberwolfach Rep. 9 (2012), no. 4, pp. 2939–2983DOI 10.4171/OWR/2012/49