-- card: 2467 from stack: in -- bmap block id: 8319 -- flags: 0000 -- background id: 2619 -- name: -- part contents for background part 23 ----- text ----- • The ith Lyapunov exponent is then defined as the average rate of growth of the length, , of the ith principal axis of the ellipsoid: where the are ordered from largest to smallest. Note: , the largest positive exponent, is what I have, up to now, been calling the Lyapunov exponent.