A variational problem associated with the minimal speed of traveling waves for spatially periodic KPP type equations

Dongyuan Xiao, Ryunosuke Mori

We consider a variational problem associated with the minimal speed of pulsating traveling waves of the equation $u_t=u_{xx}+b(x)(1-u)u$, $x\in \mathbb{R},t>0$, where the coeffic…