The quipu is a traditional Andean counting device that uses colored strings and knots in lieu of paper and numbers.

“In pure mathematics, ‘knots’ are purely mathematical entities, but they are powerful concepts for studying real things,” explains pure-mathematician Yuka Kotorii, deputy director of ...

There are thousands upon thousands of these kinds of conceptual tangles in a bewildering corner of mathematics known as knot theory, but even there Conway’s discovery was special—not so much for what ...

Read about how knots and molecules are related; take a trip into the fourth dimension; try out new dissections of stars, crosses and polygons; and challenge yourself with new twists on classic games. ...

6, 118–121; 2010). Mark Dennis and co-workers use mathematical knot theory to construct complex functions in an abstract 3D space on a periodic braid. The knot function is then embedded in a ...