Giulio Ugo Bisconcini (2 March 1880, Padua – 1969) was an Italian mathematician, known for his work on the three-body problem.
[3] He was also a professor ordinarius at the commercial institute "Luigi di Savoia - Duca degli Abruzzi" in Rome.
[4] Bisconcini was one of the professors conducting the Università clandestina di Roma (1941–1943), which was organized by Guido Castelnuovo to teach secret university courses to Jews and disfavored opponents of fascism.
This was later shown by Bisconcini to be the case in the general problem when the three masses are finite, but he made an assumption which seemed evident but which he was unable to prove, viz., that the angular velocity of the radius vector of two bodies which collide remains finite as the time approaches the instant of collision.
While no attempt should be made to belittle the profound results of Sundman, it must be stated that they are disappointing as they give no information concerning the properties of the motion and are unsuitable for practical applications.