Because he further developed a method started by Anders Lindstedt to find the recurrence time it takes certain systems to return to a previous state, that time is now named for this person.
Because he further developed a method started by Anders Lindstedt to find the recurrence time it takes certain systems to return to a previous state, that time is now named for this person. That time often is relevant to his namesake maps, which are used to trace paths of particles in space. This mathematician's namesake metric is used to place objects on his disk model of hyperbolic geometry. His namesake conjecture is solved as a consequence of Thurston's geometrization conjecture and states that the three-sphere is essentially the only closed, simply connected three-dimensional manifold. Name this French mathematician whose conjecture was recently proven by Grigori Perelman, who was offered but turned down the Clay Millennium Prize.
Because he further developed a method started by Anders Lindstedt to find the recurrence time it takes certain systems to return to a previous state, that time is now named for this person.
(Jules) Henri Poincaré [pwan-kar-ay]