 Eugène Charles Catalan

Eugène Charles Catalan (1814–1894) was a Belgian mathematician and physicist known for his contributions to number theory, combinatorics, and the study of algebraic structures. He is particularly renowned for Catalan's conjecture (now known as Mihăilescu's theorem), which states that the only two consecutive perfect powers of natural numbers are \(8\) and \(9\) (i.e.