Fundamental groups of a class of rational cuspidal plane curves
INTERNATIONAL JOURNAL OF MATHEMATICS, vol.27, no.12, 2016 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 27 Issue: 12
- Publication Date: 2016
- Doi Number: 10.1142/s0129167x16501044
- Journal Name: INTERNATIONAL JOURNAL OF MATHEMATICS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Galatasaray University Affiliated: Yes
Abstract
We compute the presentations of fundamental groups of the complements of a class of rational cuspidal projective plane curves classified by Flenner, Zaidenberg, Fenske and Saito. We use the Zariski-Van Kampen algorithm and exploit the Cremona transformations used in the construction of these curves. We simplify and study the group presentations so obtained and determine if they are abelian, finite or big, i.e. if they contain free non-abelian subgroups. We also study the quotients of these groups to some extent.