| 干丹岩.对合的分解[J].数学研究及应用,1991,11(1):52~56 |
| 对合的分解 |
| Decomposition of Involutions |
| 投稿时间：1990-09-27 |
| DOI：10.3770/j.issn:1000-341X.1991.01.012 |
| 中文关键词: |
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| 基金项目:国家自然科学基金资助项目. |
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| 英文摘要: |
| Using the notion of biconnected sum we define the biconnected sum (T1, M1)§(T2,M2) of two involutions (T1M1) and (T2,M2) which is an involution on the biconnected sum M1,§M2. A connected involution is said to be reducible if it can be expressed as a biconnected sum of two connected involutions.Theorem Each connected involution (T, M) can be decomposed into a bi-connected sum of connected irreducible involutions (T, M)=(T1, M1)§…§(Tq,Mq),and (?) where the coefficients of Hn_1(M) are in Z/2 Z if M is unoriented, in Z if is oriented . |
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