Hilbert's Nineteenth Problem - Nash's Theorem

Nash's Theorem

Nash gave a continuity estimate for solutions of the parabolic equation

where u is a bounded function of x1,...,xn, t defined for t ≥ 0. From his estimate Nash was able to deduce a continuity estimate for solutions of the elliptic equation

by considering the special case when u does not depend on t.

Read more about this topic:  Hilbert's Nineteenth Problem

Famous quotes containing the words nash and/or theorem:

    Your hair may be brushed, but your mind’s untidy,
    You’ve had about seven hours’ sleep since Friday,
    No wonder you feel that lost sensation;
    You’re sunk from a riot of relaxation.
    —Ogden Nash (1902–1971)

    To insure the adoration of a theorem for any length of time, faith is not enough, a police force is needed as well.
    Albert Camus (1913–1960)