How to (symplectically) thread the eye of a (Lagrangian) needle
英文摘要：
We show that there exists no Lagrangian embeddings of the Klein bottle into $\CC^{2}$. Using the same techniques we also give a new proof that any Lagrangian torus in $\CC^2$ is smoothly isotopic to the Clifford torus.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
