اثبات آسان این که یک میدان مغناطیسی یک تعادل برای مسابقه فضایی در هواپیما است

This note contains an easy proof that a square lattice is a strict Nash equilibrium of the location game in the plane. The technique used is so simple that it should prove useful in higher dimensions. Journal of Economic Literature Classification Numbers: C72, R10.