Gustavo Colonnetti (November 8, 1886 - March 20, 1968; born in Turin) was an Italian mathematician and engineer who made important contributions to continuum mechanics and strength of materials. He was a Rector of the Politecnico di Torino and President of CNR (Consiglio Nazionale delle Ricerche). His theories found important applications in modern techniques of construction, such as pre-stressed concrete. Wikipedia
The definitive Wikipedia entry for Gustavo Colonnetti. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Gustavo_Colonnetti
In questo settore il primo risultato di rilievo del 1912 ed rappresentato dal teorema che egli chiam "2 teorema di reciprocit" (il primo quello del Betti) e che ora si chiama spesso "teorema di Colonnetti". matematica.uni-bocconi.it/storia/letterac/colonnetti.htm