Hacker NewsSep 22

A Simple Way to Measure Knots Has Come Unraveled

https://www.quantamagazine.org/a-simple-way-to-measure-knots-has-come-unraveled-20250922/

#HackerNews #SimpleKnots #KnotTheory #ScienceNews #QuantumMagazine #Measurement

A Simple Way To Measure Knots Has Come Unraveled | Quanta Magazine

Two mathematicians have proved that a straightforward question — how hard is it to untie a knot? — has a complicated answer.

Quanta Magazine
Jennifer GrinsteadApr 11, 2023
#EinsteinTile #QuantumMagazine #Hobbyists https://www.quantamagazine.org/hobbyist-finds-maths-elusive-einstein-tile-20230404
Hobbyist Finds Math’s Elusive ‘Einstein’ Tile | Quanta Magazine

The surprisingly simple tile is the first single, connected tile that can fill the entire plane in a pattern that never repeats — and can’t be made to fill it in a repeating way.

Quanta Magazine