English

On Deformations of Hyperbolic Varities

Algebraic Geometry 2022-10-04 v2

Abstract

In this paper we study flat deformations of real subschemes of Pn\mathbb{P}^n, hyperbolic with respect to a fixed linear subspace, i.e. admitting a finite surjective and real fibered linear projection. We show that the subset of the corresponding Hilbert scheme consisting of such subschemes is closed and connected in the classical topology. Every smooth variety in this set lies in the interior of this set. Furthermore, we provide sufficient conditions for a hyperbolic subscheme to admit a flat deformation to a smooth hyperbolic subscheme. This leads to new examples of smooth hyperbolic varieties.

Keywords

Cite

@article{arxiv.1608.03786,
  title  = {On Deformations of Hyperbolic Varities},
  author = {Mario Kummer and Eli Shamovich},
  journal= {arXiv preprint arXiv:1608.03786},
  year   = {2022}
}
R2 v1 2026-06-22T15:18:31.080Z