Solution
= Solution
\b[There are no symplectic structures on the <Möbius strip>.] A <symplectic form> on a surface would be a nowhere-vanishing two-form, hence would provide an <orientation>. The <Möbius strip> is nonorientable: transport around its core reverses a transverse direction and therefore reverses any local <orientation>. This is incompatible with such a two-form. The argument applies whether the boundary is included or only the interior is considered.