Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Some pairs of knots have observed values of Wr close to each other. Wr is the 3D writhe of the ideal configuration obtained by simulation. (Note that, for each chiral knot, we chose the enantiomorph having a positive topological writhe. For some knots, this enantiomorph corresponds to the mirror image of the enantiomorph usually presented in reference tables; ref. 7).
