This week’s recommended algebraic geometry paper is: Quasi-projectivity, Artin-Tits Groups, and Pencil Maps Authors: Enrique Artal Bartolo, Jose Ignacio Cogolludo-Agustin, Daniel Matei, arXiv:1005.5225v1 (Submitted on 28 May 2010) Abstract: We consider the problem of deciding if a group is the fundamental group of a smooth connected complex quasi-projective (or projective) variety using Alexander-based invariants. In […]