English

Oka's conjecture on irreducible plane sextics

Algebraic Geometry 2008-10-24 v2

Abstract

We partially prove and partially disprove Oka's conjecture on the fundamental group/Alexander polynomial of an irreducible plane sextic. Among other results, we enumerate all irreducible sextics with simple singularities admitting dihedral coverings and find examples of Alexander equivalent Zariski pairs of irreducible sextics.

Keywords

Cite

@article{arxiv.math/0701671,
  title  = {Oka's conjecture on irreducible plane sextics},
  author = {Alex Degtyarev},
  journal= {arXiv preprint arXiv:math/0701671},
  year   = {2008}
}

Comments

Final version accepted for publication

R2 v1 2026-07-22T17:49:50.161Z