👉 In mathematics, a "leiotrichy" is a mathematical object that has both algebraic and geometric properties. It can be defined as an algebraic entity with both a geometric and topological structure. Leiotrichies are often used in topology to describe singularities or structures on surfaces. Leitoches are the generalization of the concept of a sphere to higher dimensions. They have the property that their interior is simply connected, which means they cannot be decomposed into smaller pieces.