[1PT] Prerequisites:[1P0]โบโป.Difficulty:*.
Let \(๐พ,๐ฟ: S^ 1โโ^ n\) be simple and immersed closed curves with the same support; Define \(\hat๐พ(t)=๐พ(-t)\): show that either \(๐พโ_ f๐ฟ\) or \(\hat๐พโ_ f๐ฟ\).
[1PV]โบโป