Local isometric immersions of pseudo-spherical surfaces and k-th order evolution equations

Nabil Kahouadji, Niky Kamran, Keti Tenenblat

We consider the class of evolution equations that describe pseudo-spherical surfaces of the form u\_t = F (u, $\partial$u/$\partial$x, ..., $\partial$^k u/$\partial$x^k), k $\ge$ 2…