摘要
任意给定一个二元Schur凹copula,结合其自身和次对角部分,利用取大和取小运算,构造了一类新copula,使得次对角部分相互重合,讨论了新copula的Schur凹性与Schur几何凹性.
For any bivariate copula with Schur concavity,we present a new construction method to obtain copula by using the maximum and minimum operators together with the given one and its opposite diagonal section,so that the opposite diagonal section of new copulas coincides with that of the given one. The Schur concavity and Schur geometric concavity of new copulas are also investigated.
出处
《中国科学:数学》
CSCD
北大核心
2011年第7期629-639,共11页
Scientia Sinica:Mathematica
基金
安徽省教育厅自然科学研究项目(批准号:KJ2010B001)
安徽省优秀青年人才基金(批准号:2011SQRL099)资助项目