From One-Component KP Hierarchy to Two-Component KP Hierarchy and Back
arXiv:solv-int/9808003
Abstract
We show that the system of the standard one-component KP hierarchy endowed with a special infinite set of abelian additional symmetries, generated by squared eigenfunction potentials, is equivalent to the two-component KP hierarchy.
LaTeX, 9 pgs., contribution to Festschrift for A.H. Zimerman