👉 In physics and mathematics, a homology is an algebraic invariant that can be defined for any topological space. A homology class of a space is a collection of elements in the category of abelian groups, which form a group under the operation of pointwise addition. A homology class for a space X is said to be "homologous" with respect to another homology class C if there exists an integer n such that the number of points of intersection between any two homology
