We all know we live in three-dimensional space. But what does it mean when people talk about four dimensions?Author Zsuzsanna Dancso Associate ...
Copper and lutetium metal ions chaperone this molecular strand into a three-twist knot. Credit: Credit: Stuart Jantzen, Biocinematics It’s annoyingly easy to tangle your headphones into a mess of ...
A Q&A with a veteran knot theorist discusses the strange origins of the discipline, as well as its modern-day applications. This field of mathematics, rich in aesthetic beauty and intellectual ...
THE ASHLEY BOOK OF KNOTS — Clifford W. Ashley—Doubleday, Doran ($7.50). To Clifford W. Ashley, “the simple act of tying a knot is an adventure in unlimited space.” He never saw Houdini or a successful ...
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