1.1.2 The Euler equations in differential form (components)

The Euler equations in differential conservation form, split into components, are

$${ \begin{array}{lclclclcc} \displaystyle \frac{\partial }... ...) & \!\!\!\! = \!\!\!\! & 0 . \!\!\!\!\! \end{array}}$$ (2)

It is a system of first-order partial differential equations (PDEs).