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Singular perturbation of a second-order three-point boundary value problem for nonlinear systems
  • 时间：0
  • 分类：TP319[自动化与计算机技术—计算机软件与理论;自动化与计算机技术—计算机科学与技术]
  • 作者机构：[1]中国矿业大学理学院副教授,江苏徐州221008
  • 相关基金：国家自然基金（10771212）.
  • 相关项目：跨共振点非耗散振动周期解存在性研究
关键词： MATHEMATICA, 关系数据库, 候选关键字, Mathematica Relational Database Candidate Key
中文摘要：

描述了Mathematica中的表与数据库关系模式上的属性集、函数依赖集之间的对应关系．实现了属性集运算的Mathematica表．给出了数据库关系模式中计算属性集闭包、求解候选关键字的M函数。

英文摘要：

The paper presents the corresponding relation between the list in Mathematica and the sets of attrlbute,the sets of functional dependence on relation schema, implements the operations of sets of attribute with the lists in Mathematical,and gives several M functions for calculating the closure of attribute sets and finding one candidate key.

同期刊论文项目
跨共振点非耗散振动周期解存在性研究
期刊论文 74
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