数集确界的直观模型及性质综述  

An Intuitive Model and Properties of Supremum and Infimum

作　　者：刘秀梅[1] 

机构地区：[1]连云港师范高等专科学校初等教育系,江苏连云港222006

出　　处：《高等数学研究》2012年第1期82-85,共4页Studies in College Mathematics

基　　金：连云港市学术技术带头人基金资助(2009);校青蓝工程学术带头人基金资助(2009)

摘　　要：给出数集确界的直观模型,并对经过加法、减法、乘法(数乘)、除法(倒数)等运算后的集合的确界问题进行归纳和扩充.In this paper, an intuitive model of the supremum and infimum for sets is given. The properties of the supermum and infimum of sets obtained by arithmetic operations of other sets, such as addition, subtraction, scalar multiplication, and division （reciprocal） etc., are summarized and expanded.

关 键 词：确界 数集 直观模型 性质 

分 类 号：O144.1[理学—数学]