English

On perturbations of singular complex analytic curves

Complex Variables 2025-02-07 v3

Abstract

Suppose VV is a singular complex analytic curve inside C2\mathbb{C}^{2}. We investigate when a singular or non-singular complex analytic curve WW inside C2\mathbb{C}^{2} with sufficiently small Hausdorff distance dH(V,W)d_{H}(V, W) from VV must intersect VV. We obtain a sufficient condition on WW which when satisfied gives an affirmative answer to our question. More precisely, we show the intersection is non-empty for any such WW that admits at most one non-normal crossing type discriminant point associated with some proper projection. As an application, we prove a special case of the higher-dimensional analog, and also a holomorphic multifunction analog of a result by Lyubich-Peters.

Keywords

Cite

@article{arxiv.2307.11656,
  title  = {On perturbations of singular complex analytic curves},
  author = {Achinta Kumar Nandi},
  journal= {arXiv preprint arXiv:2307.11656},
  year   = {2025}
}

Comments

16 pages, theorem statements are modified, the definition of normal crossing type discriminant points is corrected, and comments are welcome!

R2 v1 2026-06-28T11:37:05.256Z