English

Links of inner non-degenerate mixed functions, Part II

Geometric Topology 2023-10-19 v2

Abstract

Let f:C2Cf:\mathbb{C}^2\to\mathbb{C} be an inner non-degenerate mixed polynomial with a nice Newton boundary with NN compact 1-faces. In the first part of this series of papers we showed that ff has a weakly isolated singularity and that its link can be constructed from a sequence of links L1,L2,,LNL_1, L_2,\ldots,L_N, each of which is associated with a compact 1-face of the Newton boundary of ff. In this paper, we offer a complete description of the links of singularities of inner non-degenerate mixed polynomials with nice Newton boundary. We show that a link arises as the link of such a singularity if and only if it is the result of the procedure from Part 1 for a sequence of links L1,L2,,LNL_1,L_2,\ldots,L_N that all satisfy certain symmetry conditions. We prove the same result for convenient, Newton non-degenerate mixed polynomials with nice Newton boundary. We also introduce the notion of P-fibered braids with OO-multiplicities and coefficients, which allows us to describe the links of isolated singularities of inner non-degenerate semiholomorphic polynomials (as opposed to weakly isolated singularities).

Keywords

Cite

@article{arxiv.2307.15340,
  title  = {Links of inner non-degenerate mixed functions, Part II},
  author = {Benjamin Bode},
  journal= {arXiv preprint arXiv:2307.15340},
  year   = {2023}
}

Comments

37 pages, 3 figures; Changes to v1: simplified the statement of Theorem 1.5, improved Theorem 1.7 and rewrote parts of Section 6