Peter S. Constantin

John von Neumann Professor, Princeton University. Contributed to the mathematics of fluids. Produced a new method to study generalized Lyapunov exponents and the dimension of the global attractor for Navier-Stokes. Introduced local smoothing for dispersive equations, an important general interplay between decay and smoothing in dispersive systems. Introduced the concept of active scalar, which has been shown to have geometric analogies to the 3D Euler system. Studied turbulent advection in combustion and Onsager's conjecture on anomalous energy dissipation. Initiated the study of non-linear Fokker-Plank equations coupled with fluid equations. Studied nonlocal equations and introduced tools for the analysis of nonlocal operators. Author of Navier-Stokes Equations (1988).