“下确界”是数学分析中的基本概念,它是在“下界”的基础上定义的。任给一数集E,我们称E的最大下界为E的下确界,记为infE. 显然,E中每个元素均大于或等于infE.
n. infimum
misc. greatest lower bound
关于上确界与下确界的概念的教学_科教文汇(下旬刊)_2011-8_91阅读网杂志文章阅读 关键词 集合 确界 下确界 [gap=213]Key words set;supremum;infimum
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...east upper bound),记为sup B;若x是B的下界,且若x′是B的任意一个下界,必有x′≤x, 则称x是B的下确界(greatest lower bound),记为inf B. 易见,最大、最小元及上、下确界若存在是唯一的.
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We prove upward density of pairs of intervals without infimum in the c. e. Wtt-degrees.
我们先证明了Wtt-度中区间对无下确界的向上稠密性。
参考来源 - c.e.的WttA clustering method is proposed based on set similarity(SS) and object set feature(OSF),and according to the supremum and infimum of clustering set,the new object can be distributed to different clusters.
该文借助对象组相似度和对象组的特征向量,提出了一种实现聚类的方法。 根据聚类结果后,根据聚类集合的上确界和下确界给出新对象的分类。
参考来源 - 基于对象组特征向量的聚类与分类的实现 in C·2,447,543篇论文数据,部分数据来源于NoteExpress
下确界限制用于保证任务满足“至少满足”弱硬实时限制,是任务满足限制的下确界。
The greatest lower bound of constraint was the bound of tasks for satisfying the constraint and can be used to guarantee the "meet row" weakly hard real-time constraint.
运用上确界与下确界存在定理,在一定条件下,研究了连续函数的映射特点,得到一个连续函数所独有的映射规律。
According to the definite condition, the paper USES the theorem of supremum and infimum to study characteristic of mapping function and get its important law of the mapping.
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