短語詞組短語Ekeland principle Ekeland 原理Ivar Ekeland ?？死?/li>Lvar Ekeland 伊法爾·?？死?/li>Ekeland index Ekeland 指標Tor Ekeland 理律師托爾·?？颂m德vectorial Ekeland variational principle 向量值Ekeland變分原理Ekeland 's principle Phelps引理Ekeland variational principle Ekeland 變分原理 返回 Ekeland