Knot theory

Knot theory is a branch of mathematics that studies what happens when you tie a knot in a piece of string. It's called knot theory because the string forms a sort of knot, like a certain type of bow. When you tie a knot in the string, it gets twisted and turned in complicated ways. Knot theorists study how these knots are formed and how they are related to each other. For example, they might figure out which knots are strong and which ones will easily come untied, or they might study different ways of tying knots and what patterns form from them. Knot theory is very useful in many different fields, like chemistry, physics, and even medicine.