He was president of the International Mathematical Union, vice-president of the British Association for the Advancement of Science, and vice-president of the American Association for the Advancement of Science all in the year 1924.
Siya ay pangulo ng International matematiko Union, bise-presidente ng British Association para sa pagpapalaganap ng Science, at bise-presidente ng American Association para sa pagpapalaganap ng Science ang lahat sa taong 1924.