# Asymptotically periodic potentials

Who came up with the idea of solving elliptic equations with periodic potentials and from there solving elliptic equations with asymptotically periodic potentials?

• On my opinion, this question belongs to another site, hsm.stackexchange.com – Alexandre Eremenko Aug 11 at 5:02
• If by "solve" you mean "find explicit solutions," then even the simplest examples such as $y''+(\sin x) y=0$ cannot be solved in this sense. – Christian Remling Aug 11 at 18:32