Harry Dym equation
= Harry Dym equation
{c}
{title2=$p_t=p^3p_{xxx}$}
{wiki}
The Harry Dym equation is the <integrable partial differential equation> $p_t=p^3p_{xxx}$. It admits a <Lax pair> based on the second-order operator $L=-\partial_xp^2\partial_x$.