J.D. Lenzen, the inventor of fusion knotting, explains knot tying in 15 levels of difficulty, from easy to complex. J.D. starts from the very beginning, with overhead, bowline, and square knots, and ...
The original version of this story appeared in Quanta Magazine. In 1876, Peter Guthrie Tait set out to measure what he called the “beknottedness” of knots. The Scottish mathematician, whose research ...