Numerical Study of Reported Multiple Solutions to a Cauchy Problem for the 2d Incompressible Euler Equations

Bressan and Shen (2021) jointly with Bressan and Murray (2020) proposed a simple example of a Cauchy problem on $\mathbb{R}^2$, characterized by two key parameters, intended to yield nonunique weak solutions of the incompressible Euler equations. They suggest that a limiting process applied to two s