Knot Theory is a branch of mathematics that studies the properties and classifications of knots. A knot is defined as a closed loop in three-dimensional space that does not intersect itself. Mathematicians use various techniques to determine whether two knots are equivalent or different, often visualizing them through diagrams and models. This field has applications in various areas, including biology, where it helps understand the structure of DNA, and physics, particularly in the study of topological defects in materials. Knot Theory also intersects with art, as artists explore the aesthetic aspects of knots and their complex forms.