A Powerful New ‘QR Code’ Untangles Math’s Knottiest Knots | Quanta Magazine - Erica Klarreich | With a newly discovered mathematical tool, researchers are hoping to gain unprecedented insight into the structure of complex knots The paper: A Fast, Strong, Topologically Meaningful and Fun Knot Invariant Dror Bar-Natan, Roland van der Veen arXiv:2509.18456 [math.GT]: https://arxiv.org/abs/2509.18456 https://www.quantamagazine.org/a-powerful-new-qr-code-untangles-maths-knottiest-knots-20260422/