👉 In mathematics, a knot is an object that represents a closed curve in 3-dimensional space. Knots are defined by their crossings and are used to describe objects such as knots in knots or knots on surfaces. A knot is said to be "knotless" if it does not contain any crossing. In other words, the only way to connect two points on a knot is through a single crossing. For example, consider the knot pictured below: ``` __________ / \
