👉 Rases, also known as "races," are a type of mathematical structure that is used in algebraic topology and other areas where geometry and topology intersect. In geometry, a race is a closed subset of Euclidean space (such as the plane or three-dimensional space) which bounds a region in that space. It can be defined by specifying points at which two curves meet. In topology, a race is another term for a closed surface in three-dimensional space. A surface is considered to