论文标题
一个smale barden歧管，承认K-contact，但不承认Sasakian结构
A Smale-Barden manifold admitting K-contact but not Sasakian structure
论文作者
论文摘要
我们给出了一个简单连接的紧凑型5个manifold（Smale-barden歧管）的第一个例子，该杂物承认了K-contact结构，但不承认任何Sasakian结构，解决了Boyer和Galicki的长期问题。
We give the first example of a simply connected compact 5-manifold (Smale-Barden manifold) which admits a K-contact structure but does not admit any Sasakian structure, settling a long standing question of Boyer and Galicki.
