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 […]
Tag: groups
The smallest of all possible groups
Is ‘a pair’ big enough to be called ‘a group’? The tricky subject of dyads has recently been causing considerable professorial debate in the journal ‘Small Group Research’. (Note: the word ‘dyad ‘ is derived from the Greek ‘dýo’, meaning ‘two’.) It began back in April 2010, when Richard Lee Moreland, Professor in the Psychology […]