Tropical Ptolemy Transformations and Invariants of Braids
Geometric Topology
2025-06-17 v1 Group Theory
Abstract
It often happens in mathematics that one and the same equation is known under different names in different areas of mathematics. The famous pentagon identity appears in low-dimensional topology in different ways. In this paper, we use the tropical version of the Ptolemy equation to construct invariants of braids.
Cite
@article{arxiv.2506.12085,
title = {Tropical Ptolemy Transformations and Invariants of Braids},
author = {Gurnoor Singh},
journal= {arXiv preprint arXiv:2506.12085},
year = {2025}
}
Comments
10 pages, 6 figures