带有对合的光滑闭流形

Smooth closed manifolds with smooth involution

找到了未定向协边子群 与 之间的关系。利用 ，决定了 ，同时也得到了 的一个充要条件，这里ｋｊ为奇数且ｋｊ≥１１，ｉ＝３，…，ｌ。作为对Ｉｍｎ的进一步讨论，还决定了Ｉｍ 的群结构。

The relation between unoriented bordism subgroups and Im was found. By means of the subgroup Im , the subgroup, was determined and a sufficient and necessary condition of was obtained, where ki is odd and ki≥11, i=3,..,l. Moreover, was discussed and the group construction of was determined.