J4

• • 上一篇    下一篇

关于投资收益-风险模型等价性的证明

赖 民,  赵世舜, 宋立新   

  1. 吉林大学数学研究所, 长春 130012
  • 收稿日期:2003-03-25 修回日期:1900-01-01 出版日期:2003-10-26 发布日期:2003-10-26
  • 通讯作者: 赖民

The Equivalence Property of Return-Risk Models

LAI Min, ZHAO Shi-shun, SONG Li-xin   

  1. Institute of Mathematics, Jilin University, Changchun 130012, China
  • Received:2003-03-25 Revised:1900-01-01 Online:2003-10-26 Published:2003-10-26
  • Contact: LAI Min

摘要: 通过拉格朗日乘子法和Kuhn-Tucker条件证明了投资收益-风险模型两种策略的等价性 , 即这两种策略对应的最优投资组合是相同的.

关键词: 收益, 风险, 拉格朗日函数, 拉氏乘子法, Kuhn-Tucker条件

Abstract: The equivalence property of two strategies in return-risk models is discussed according to Lagrange’s method of multipliers and Kuh n-Tucker conditions. It is proved that the two optimal portfolios which were sel ected from the strategies are equal provided at least two of the n expected returns are not equal.

Key words: return, risk, Lagrangian functions, Lagrange’s method of multipliers, Kuhn-Tucker conditions

中图分类号: 

  • O212.1