👉 In mathematics, "unsimilarity" refers to two sets having no common elements. In other words, they are not alike in any way. For example, if you have two sets A and B, then set A is different from set B if there exists an element x that belongs to both sets A and B (i.e., x is a member of the intersection of A and B). This concept can be applied in various fields such as computer science, geometry, and algebra.