John McKay

John McKay (1939-2023) was a prominent American mathematician known for his contributions to group theory and algebra. He is best recognized for the McKay Correspondence, which connects finite subgroup representations of exceptional Lie algebras with finite simple groups, enhancing our understanding of symmetry in mathematics. McKay's work blurred the lines between different areas of mathematics, influencing both theoretical and applied fields. His legacy includes numerous influential publications and the inspiration of generations of mathematicians, highlighting the deep connections within mathematical structures and encouraging further exploration into the abstract principles underlying algebra.