N [maths] → another name for limit point
Every countable open filter base which has an only accumulation point in X is convergent to the accumulation point;
X中每个有唯一聚点的可数开滤子基收敛于该聚点；
Molecular net, ideal S-limit point and S-accumulation point are introduced into LF topological space, and the condition and property of S-convergence and S-accumulation are discussed.
在LF拓扑空间中引进分子网和理想的S极限点和S -聚点的概念，并讨论s -收敛与S -聚于的条件及其性质。
The article mainly discusses the commonly occurred problems during the judgment of the course credit, the calculation of credit accumulation point and the average credit accumulation point.
该文就学分制教学管理中经常涉及到的关于课程学分的认定、学分绩点与平均学分绩点的计算等学分管理问题作一些探讨。
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