{ "id": "1209.6278", "version": "v1", "published": "2012-09-27T16:37:46.000Z", "updated": "2012-09-27T16:37:46.000Z", "title": "Notes on hyperelliptic fibrations of genus 3, I", "authors": [ "Masaaki Murakami" ], "comment": "28 pages", "categories": [ "math.AG" ], "abstract": "We shall study the structure of hyperelliptic fibrations of genus 3, from the view point given by Catanese and Pignatelli in arXiv:math/0503294. In this part I, we shall give a structure theorem for such fibrations for the case of f : S \\to B with all fibers 2-connected. We shall also give, for the case of B projective line, sufficient conditions for the existence of such fibrations from the view point of our structure theorem, prove the uniqueness of the deformation type and the simply connectedness of S for some cases, and give some examples including those with minimal regular S with geometric genus 4 and the first Chern number 8. The last example turns out to be a member of the family M_0 given in Bauer--Pignatelli arXiv:math/0603094.", "revisions": [ { "version": "v1", "updated": "2012-09-27T16:37:46.000Z" } ], "analyses": { "subjects": [ "14J29", "14D06" ], "keywords": [ "hyperelliptic fibrations", "view point", "structure theorem", "example turns", "sufficient conditions" ], "note": { "typesetting": "TeX", "pages": 28, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1209.6278M" } } }