Vito Volterra KBE FRS(For) H FRSE (/ v oʊ l ˈ t ɛr ə /, Italian: [ˈviːto volˈtɛrra] ; 3 May 1860 – 11 October 1940) was an Italian mathematician and physicist, known for his contributions to mathematical biology and integral equations, being one of the founders of functional analysis.