👉 In mathematics, a joint is a mathematical concept involving two or more objects connected together by means of a common boundary. For example, in geometry, a joint can be a line segment that connects two points on the same object. In topology and analysis, it refers to a continuous function that maps differentiable manifolds onto each other. Jointness is often used in abstract algebraic structures such as groups, rings, and modules. It also has applications in physics where it describes how objects interact with
