Susanna Terracini (born April 29, 1963)^[1] is an Italian mathematician known for her research on chaos in Hamiltonian dynamical systems, including the n-body problem, reaction–diffusion systems, and the Schrödinger equation.^[2]

Terracini was born in South London. She earned a laurea in 1986 in mathematics at the University of Turin, supervised by Fulvia Skof.^[1] She completed her Ph.D. at the International School for Advanced Studies in 1990. Her dissertation, Periodic Solutions to Singular Newtonian Systems, was supervised by Ivar Ekeland and Sergio Solimini.^[1][3] She was a researcher at Paris Dauphine University from 1988 to 1989, and became a faculty member at the Polytechnic University of Milan in 1990. In 2001 she became a full professor at the University of Milano-Bicocca, and in 2012 she returned to Turin as a professor.^[1]

One of Terracini's papers on the n-body problem was selected for a featured review in Mathematical Reviews.^[2][4] She was the winner of the 2002 Vinti Prize, a prize of the Italian Mathematical Union for young researchers in mathematical analysis. In 2007 she won the Bruno Finzi Prize of the Istituto Lombardo Accademia di Scienze e Lettere.^[2] In 2020 she was awarded the Schauder Medal from the Juliusz P. Schauder Center for Nonlinear Studies at the Nicolaus Copernicus University in Toruń, Poland.^[5]

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