Jean-François Quint is a French mathematician, specializing in dynamical systems theory for homogeneous spaces.
In 2005 he joined the staff working on "Ergodic theory and dynamics systems" of Laboratoire Analyse, Géométrie et Applications (LAGA) at the Institut Galilée of the University of Paris 13.
According to the citations, Benoist and Quint were honored "for their spectacular work on stationary measures and orbit closures for actions of nonabelian groups on homogeneous spaces.
This work is a major breakthrough in homogeneous dynamics and related areas of mathematics.
In particular, Benoist and Quint proved the following conjecture of Furstenberg: Let H be a Zariski dense semisimple subgroup of a Lie group which acts by left translations on the quotient of G by a discrete subgroup with finite covolume.