Antonio Giorgilli (born 1949) is an Italian mathematical physicist,[1] known for his work on the perturbative theory of Hamiltonian systems with applications to studies of orbital stability for major and minor planets.
At the University of Milan, he graduated in March 1974 in physics with a Laurea thesis on normal modes for nonlinear Hamiltonian systems and then held junior academic appointments in the physics department there.
From 1983 to 1998 he served as a tenured associate professor at the University of Milan's mathematical physics group.
In October 2005 he moved to the University of Milan's department of mathematics, as a full professor.
[2] In 1998 Giorgilli was an Invited Speaker of the International Congress of Mathematicians in Berlin.