In 1944, together with his colleague Benjamin Bernstein, he published Symmetric approach to commutative rings, with duality theorem: Boolean duality as special case in the Duke Mathematical Journal.
Sa 1944, kasama ang kanyang mga kasamahan Benjamin Bernstein, siya nai-publish na timbang sa commutative rings, na may duality teorama: Boolean duality bilang espesyal na kaso sa Duke matematiko Journal.