$\mathbb{A}^1_*$-fibrations on affine threefolds
Algebraic Geometry
2012-11-09 v1
Abstract
The affine line minus one point is the underlying space of the algebraic torus of dimension one. However the fibration of an affine algebraic threefold by the affine line minus one point is not always the quotient morphism of the threefold by the algebraic torus. We investigate the structure of affine algebraic threefolds having fibrations by the affine line minus one point. Our results cover not only algebro-geometric but also topological properties of the threefolds. We also consider when the fibration by the affine line minus one point becomes the quotient morphism by an algebraic torus of dimension one.
Cite
@article{arxiv.1211.1757,
title = {$\mathbb{A}^1_*$-fibrations on affine threefolds},
author = {R. V. Gurjar and M. Koras and K. Masuda and M. Miyanishi and P. Russell},
journal= {arXiv preprint arXiv:1211.1757},
year = {2012}
}
Comments
39 pages, To appear in the Proceedings of the conference held in Osaka, March 2011