The interaction of shock waves is investigated for the following nonstrictly hyperbolic system:The interaction of shock waves is complicated, with new types of
Let H<sub>n,m</sub> be the number of rooted non-isomorphic bipartite planar maps with m edges and the valency of the rooted face being 2n. This note provides th
Under an algebraic constraint between the potentials and the eigeufunctions, the Jaulent-Miodek eigenvalue problem is nonlinearized to be a completely integrabl