«To compare and measure the complexity of knots, mathematicians compute their unknotting numbers — the minimum number of steps it takes to transform a knot into a simple loop.»
News feed collides on a knot 😄
Quanta Magazine
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.
