English

Non cancellation for smooth contractible affine threefolds

Algebraic Geometry 2015-03-17 v1

Abstract

We construct two non isomorphic contractible affine threefolds X and Y with isomorphic cylinders, showing that the generalized Cancellation Problem has a negative answer in general for contractible affine threefolds. We also establish that X and Y are actually biholomorphic as complex analytic varieties, providing the first example of a pair of biholomorphic but not isomorphic exotic affine 3-spaces.

Keywords

Cite

@article{arxiv.1004.4723,
  title  = {Non cancellation for smooth contractible affine threefolds},
  author = {Adrien Dubouloz and Lucy Moser-Jauslin and Pierre-Marie Poloni},
  journal= {arXiv preprint arXiv:1004.4723},
  year   = {2015}
}
R2 v1 2026-06-21T15:15:17.989Z