The modified Lax and two-dimensional Toda lattice equations associated with simple Lie algebras

George Wilson
1981 Ergodic Theory and Dynamical Systems  
We associate to each complex simple Lie algebra g a hierarchy of evolution equations; in the simplest case g = sl(2) they are the modified KdV equations. These new equations are related to the two-dimensional Toda lattice equations associated with g in the same way that the modified KdV equations are related to the sinh-Gordon equation.
doi:10.1017/s0143385700001292 fatcat:mqrukh3l3banrov22joxezf3ti