English

On a construction of stable maps from 3-manifolds into surfaces

Geometric Topology 2026-05-25 v3

Abstract

For any link in the 33-sphere, we give a visual construction of a stable map ff from the 33-sphere into the real plane enjoying the following properties; ff has no cusp point, the set of definite fold points of ff is isotopic to the given link and ff only has certain type of fibers containing two indefinite fold points. As a corollary, we obtain a similar stable map from every closed orientable 33-manifold into the 22-sphere.

Keywords

Cite

@article{arxiv.2508.21337,
  title  = {On a construction of stable maps from 3-manifolds into surfaces},
  author = {Gakuto Kato},
  journal= {arXiv preprint arXiv:2508.21337},
  year   = {2026}
}

Comments

14 pages, 16 figures