Robert Le Ricolais
Robert Le Ricolais (La Roche-sur-Yon (Vendée) 30 October 1894 – Neuilly-sur-Seine, 4 June 1977), was a French engineer considered one of the creators of the spatial structure principle, based on mathematical logic and observation of nature. He studied and worked in France from 1912 to 1951 and taught at the University of Pennsylvania from 1954 to 1975.