Rigidity of highly twisted plat diagrams

Fuente: arXiv
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Main Authors: Lazarovich, Nir, Moriah, Yoav, Pinsky, Tali, Purcell, Jessica S.
Format: Preprint
Published: 2025
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_version_ 1866913982897455104
author Lazarovich, Nir
Moriah, Yoav
Pinsky, Tali
Purcell, Jessica S.
author_facet Lazarovich, Nir
Moriah, Yoav
Pinsky, Tali
Purcell, Jessica S.
contents In this paper we prove that if a knot or link has a sufficiently complicated plat projection, then that plat projection is unique. More precisely, if a knot or link has a $2m$-plat projection, where $m$ is at least four, and height at least two, and each twist region of the plat contains at least four crossings, then such a projection is unique up to obvious rotations. In particular, this projection gives a canonical form for such knots and links, and thus provides a classification of these links.
format Preprint
id arxiv_https___arxiv_org_abs_2508_07303
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Rigidity of highly twisted plat diagrams
Lazarovich, Nir
Moriah, Yoav
Pinsky, Tali
Purcell, Jessica S.
Geometric Topology
57K10, 57K32, 20F36
In this paper we prove that if a knot or link has a sufficiently complicated plat projection, then that plat projection is unique. More precisely, if a knot or link has a $2m$-plat projection, where $m$ is at least four, and height at least two, and each twist region of the plat contains at least four crossings, then such a projection is unique up to obvious rotations. In particular, this projection gives a canonical form for such knots and links, and thus provides a classification of these links.
title Rigidity of highly twisted plat diagrams
topic Geometric Topology
57K10, 57K32, 20F36
url https://arxiv.org/abs/2508.07303