👉 The term "semiperfect" or "semiperfectly compatible" is often used in mathematics to describe a mathematical object that satisfies certain properties, but also has some degree of freedom. In this context, it refers to an object where every element has exactly two direct neighbors, meaning that no two elements can be directly connected by any path. For example, consider the graph G = (V,E) with vertex set V and edge set E. A semiperfect graph is a graph in