English

A nonpolynomially convex isotropic two-torus with no attached discs

Complex Variables 2017-02-14 v2 Symplectic Geometry

Abstract

We show --- with the means of a real-analytic example in C3\mathbb{C}^3 --- that Gromov's theorem on the presence of attached holomorphic discs for compact Lagrangian manifolds is not true in the isotropic (subcritical) case, even in the absence of an obvious obstruction, i.e, polynomial convexity.

Keywords

Cite

@article{arxiv.1610.09356,
  title  = {A nonpolynomially convex isotropic two-torus with no attached discs},
  author = {Purvi Gupta},
  journal= {arXiv preprint arXiv:1610.09356},
  year   = {2017}
}

Comments

Reference to a stronger example added; proof simplified

R2 v1 2026-06-22T16:35:41.783Z