👉 In mathematics, "extralateral" refers to a set or object that is not contained within another set. It is often used in the context of geometry and topology, where it represents an object that does not lie on the surface of a given set. For example, if we have two sets A and B, then the set {x ∈ A | x ≠ y} is called the extralateral of set A, where "y" is an arbitrary element in set A. In geometry
