Characteristic varieties of graph manifolds and quasi-projectivity of fundamental groups of algebraic links

E. Artal Bartolo, J. I. Cogolludo-Agustín, D. Matei

Published 2019-04-01Version 1

The present paper studies the structure of characteristic varieties of fundamental groups of graph manifolds. As a consequence, a simple proof of Papadima's question is provided on the characterization of algebraic links that have quasi-projective fundamental groups. The type of quasi-projective obstructions used here are in the spirit of Papadima's original work.