👉 In mathematics, a "manifold" is a geometric object that can be thought of as an abstract space where certain types of continuous functions are defined and continuous maps are allowed. Manifolds are often used to represent mathematical objects such as surfaces, spaces, and manifolds in physics. A manifold is said to have a "structure", which is a property that it possesses without specifying the underlying set or topology. For example, if we consider the space of all complex numbers under addition, then