A lower bound of the crossing number of composite knots

Fuente: arXiv
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Autori principali: Qiu, Ruifeng, Wang, Chao
Natura: Preprint
Pubblicazione: 2024
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author Qiu, Ruifeng
Wang, Chao
author_facet Qiu, Ruifeng
Wang, Chao
contents Let $c(K)$ denote the crossing number of a knot $K$ and let $K_1\# K_2$ denote the connected sum of two oriented knots $K_1$ and $K_2$. It is a very old unsolved question that whether $c(K_1\# K_2)=c(K_1)+c(K_2)$. In this paper we show that $c(K_1\# K_2)> (c(K_1)+c(K_2))/16$.
format Preprint
id arxiv_https___arxiv_org_abs_2407_10467
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle A lower bound of the crossing number of composite knots
Qiu, Ruifeng
Wang, Chao
Geometric Topology
Primary 57M25, Secondary 57N10
Let $c(K)$ denote the crossing number of a knot $K$ and let $K_1\# K_2$ denote the connected sum of two oriented knots $K_1$ and $K_2$. It is a very old unsolved question that whether $c(K_1\# K_2)=c(K_1)+c(K_2)$. In this paper we show that $c(K_1\# K_2)> (c(K_1)+c(K_2))/16$.
title A lower bound of the crossing number of composite knots
topic Geometric Topology
Primary 57M25, Secondary 57N10
url https://arxiv.org/abs/2407.10467