McKay's Existence Theorem

McKay's Existence Theorem, in simple terms, is a concept from group theory, a field in mathematics. It states that there exists a certain kind of mathematical object known as a "graph" associated with a group called the " McKay quiver." This theorem establishes a relationship between these quivers and finite groups, particularly those related to representations in higher dimensions. Essentially, it helps mathematicians understand how these complex structures can exist and interact, paving the way for deeper insights into symmetry and representation in abstract algebra.