English

Affine-ruled varieties without the Laurent cancellation property

Algebraic Geometry 2018-05-16 v1

Abstract

We describe a method to construct hypersurfaces of the complex affine nn-space with isomorphic C\mathbb{C}^*-cylinders. Among these hypersurfaces, we find new explicit counterexamples to the Laurent Cancellation Problem, i.e. hypersurfaces that are non isomorphic, although their C\mathbb{C}^*-cylinders are isomorphic as abstract algebraic varieties. We also provide examples of non isomorphic varieties XX and YY with isomorphic cartesian squares X×XX\times X and Y×YY\times Y.

Keywords

Cite

@article{arxiv.1509.07803,
  title  = {Affine-ruled varieties without the Laurent cancellation property},
  author = {Adrien Dubouloz and Pierre-Marie Poloni},
  journal= {arXiv preprint arXiv:1509.07803},
  year   = {2018}
}