Los Alamos published the FPU report on May 1, 1955, acknowledging Mary Tsingou.
On May 1, 1955, the Los Alamos Scientific Laboratory published “Studies of Nonlinear Problems,” recording what is now known as the Fermi-Pasta-Ulam-Tsingou problem. Mary Tsingou was instrumental in this landmark study, responsible for the complex coding required to run the computations on the MANIAC computer. Her contributions enabled the execution of one of the earliest and most important demonstrations of computer simulations in physics.
The report acknowledged her efficiency and critical role, though it was years later before the experiment would be formally named to include her. The work questioned the foundational assumptions of statistical mechanics and introduced new fields by demonstrating recurring dynamical behavior without attaining thermal equilibrium, thus becoming a cornerstone of modern nonlinear physics and chaos theory.