| Abstract: |
| We are going to analyze the traveling waves problem of
$$
u_t= (a(u, u_x) )_x+f(u),\qquad (t,x)\in \mathbb{R}^2,
$$
where $a(u, u_x)$ is an increasing function in the second component and
$f$ is of Fisher type.
The main problem is to make sense of the singular solution to
provide information on the speed of propagation of the evolution of a compact supported initial data. |
|