English

A multi-variable Alexander polynomial for a framed transverse graph

Geometric Topology 2025-12-01 v1

Abstract

We propose a definition of the rotation number for transverse graph diagrams, extending the classical notion of the rotation number for plane curves. Using this, we introduce a normalized multi-variable Alexander polynomial for framed, oriented transverse graphs without sinks or sources, embedded in the 3-sphere S3S^3. We prove that our invariant coincides with the Uq(gl(11))U_q(\mathfrak{gl}(1\vert 1))-Alexander polynomial proposed by Viro.

Keywords

Cite

@article{arxiv.2511.22867,
  title  = {A multi-variable Alexander polynomial for a framed transverse graph},
  author = {Yuanyuan Bao and Zhongtao Wu},
  journal= {arXiv preprint arXiv:2511.22867},
  year   = {2025}
}
R2 v1 2026-07-01T07:58:46.857Z