Fundamental groups of a class of rational cuspidal plane curves


ULUDAĞ A. M.

INTERNATIONAL JOURNAL OF MATHEMATICS, cilt.27, 2016 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 27 Konu: 12
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1142/s0129167x16501044
  • Dergi Adı: INTERNATIONAL JOURNAL OF MATHEMATICS

Özet

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.