Non-bi-orderability of $6_2$ and $7_6$
Azer Akhmedov, Cody Martin · arXiv (Cornell University) · 2015
We prove that the knot groups of $6_2$ and $7_6$ are not bi-orderable. These are the only two knot groups up to 7 crossings whose bi-orderability was not known. Our method applies to a very broad class of knots.