加群有循环极大子群的柱

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构造Yang-Baxter方程的非退化对合集论解的问题可归结为构造所有右柱的问题.特别地,所有有限右柱的分类是描述Yang-Baxter方程所有这类解的基础.设H是pn阶右柱,(H,+)≌Zp×Zpn-1,其中n≥4,p是奇素数.本文证明了 |Soc(H)|≠1,并且给出了 |Soc(H)|=pn-1的H的分类.
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结合两阶段柬方法思想,提出新的束集修正策略,得到一个求解非光滑约束优化问题的两阶段束方法.当稳定中心更新时,通过束集修正策略,约束函数值更小的新点将替代束集中的一部分不可行点,目标函数值更小的新点将替代一部分可行点,旨在得到质量更优的束集.算法能接受不可行初始点,在阶段一搜索一个可行迭代点,一旦产生可行迭代点,进入阶段二执行可行方向算法.算法具备全局收敛性,且初步的数值结果表明算法是有效的.
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