■-粗积分的面积覆盖度-边界厚度特征  

■rough Integrals and Its Covered Area-boundary Thickness Characteristics

作　　者：方文青[1,2] 于秀清[3,2] 

机构地区：[1]德州职业技术学院,山东德州253034 [2]山东大学数学与系统科学学院,山东济南250100 [3]德州学院,山东德州253000

出　　处：《聊城大学学报（自然科学版）》2008年第4期6-9,共4页Journal of Liaocheng University:Natural Science Edition

基　　金：山东省自然科学基金资助课题(Y2007H02)

摘　　要：函数单向S-粗集对偶生成的■-粗积分是一个积分对.基于■-粗积分引入面积覆盖度和边界厚度概念,讨论了■-粗积分面积覆盖度和边界厚度的特征与最值,并给出其动态变化规律.这两个概念把对■-粗积分的讨论由定性过渡到定量.-↑Frough integrals generated by dual of founction one direction S-rough sets is composed with one pair of the integrals ,on the base of which we introduce the concepts of degree of covered area and boundary thickness. We discuss their characteristics, extremes and give the dynamic law. The degree of covered area and boundary thickness turns the discussion about -↑Frough integrals from quality to quantity.

关 键 词：-↑F-粗积分 面积特征 面积覆盖度 边界厚度 

分 类 号：O159[理学—数学]