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- By means of variational structure and Z2 group index theory, we obtain multiple solutions of boundary value problems for second-order ordinary differential equations and lower bound estimate for number of the solutions. 摘要本文利用变分原理和Z2不变群指标研究了一类二阶常微分方程奇异边值问题的多重解，得出了这类解个数的下界估计。
- Z2 group index theory Z2不变群指标
- group index theory Z2不变群指标
- Z2- group index theory Z2不变群指标
- z2 --group index theory Z2不变群指标
- Conley index theory generalizes classical Morse theory as a tool for studying the dynamics of flows. 而如何协助使用者快速获得真正需要的资讯正是文件分群系统的目的，也是本研究的动机。
- By fixed point index theory, multiplicity question of solutions to superlinear operator equations in ordered Banach space is discussed. 通过不动点指数理论，讨论了一类超线性算子方程的多重解问题。
- Abstract: Using the fixed point index theory, the existence of positive solutions of a class of a two-point boundary value problems nolinear differential equations on hairline is investigated. 中文摘要: 应用锥拉压不动点定理讨论了一类常见的二阶微分方程奇异边值问题正解的存在性。
- the fixed point index theory in two cones 双锥上的不动点定理
- Education should not be restricted to any one specific age group. 教育不应限制在任何特定的年龄组上。
- He broke away from that lawless group years ago. 他在几年前脱离了那个非法团体。
- The group of barbaric soldiers killed many people. 那群野蛮的士兵杀了很多人。
- According to city ecosystem evaluation standards set by professor Song Yongchang, passing 4 groups index and 43 items index, this text proceeded city ecosystem evaluation of Zhengzhou. 摘要以宋永昌教授设置的城市生态系统评价标准为依据，通过4组共43项指标对郑州市的城市生态系统进行了评价。
- The group was made up of doctors. 这个团体是由医生组成的。
- A group of boys dashed out of the classroom. 一群男孩子从教室里冲出来。
- I come upon a group of children play in the street. 我遇到一群孩子在街上玩耍。
- He goes about with a group of nice boys. 他经常和一群好孩子在一起玩。
- He is a the most brisk young man in this group. 他是这个小组中最活跃的年轻人。
- He showed me a photo of a family group. 他给我看一张合家欢的照片。
- A Review of Urban Land Price Index Theory and Practice in China 我国城市地价指数理论和应用研究综述
