Luigi Fantappiè (15 September 1901 – 28 July 1956) was an Italian mathematician, known for work in mathematical analysis and for creating the theory of analytic functionals: he was a student and follower of Vito Volterra.

Luigi Fantappiè was born in Viterbo, and studied at the University of Pisa, graduating in mathematics in 1922.

He spent the years 1934 to 1939 in the University of São Paulo, Brazil collaborating with Benedito Castrucci notorious Italian-Brazilian mathematician.

A process that is driven by negative entropy will increase order with time, such as all forms of life tend to do.

[citation needed] In 1942 he put forth a unified theory of physics and biology and the syntropy concept.