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模糊数线性方程组解的概念与性质

The Solution Concept and Quality of Systems of Linear Equations with Fuzzy Number-valued Coefficients

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【作者】 李香玲张建梅

【Author】 LI Xiang-ling,ZHANG Jian-mei(Department of Mathematics and Physics,Hebei Institute of Architecture and Civil Engineering,Hebei Zhangjiakou 075024,China)

【机构】 河北建筑工程学院数理系

【摘要】 介绍了有关的研究背景,说明模糊数矩阵方程组■=■■+与(■-■)■=的等价性.对模糊数线性方程组当系数矩阵为方的且非奇异时,给出方程组的6种解的形式,并说明其中5种具有一致性.当系数矩阵行列任意时,借助广义逆给出了解的定义,证明了此定义的合理性,并验证了此解与前人给出的解是一致的.最后给出最小范数解、最小二乘解和最小范数最小二乘解的定义形式.

【Abstract】 The relative background of the study is introduced,and the linear equations with fuzzy number ■=■■+ and(■-■)■= being equal explained.When the fuzzy matrix of the linear equations is square and non-singular,five of the six solutions are identical;when the fuzzy matrix is arbitrary,generalized inverses is used to define the solution of the equations and prove that it is reasonable.In addition,the study verifies that this definition is identical with formers.Lastly,it provides three other forms of solution:least norms solution,least squares solution and least norms-squares solution.

【基金】 河北省科技厅科技攻关项目(072135226)
  • 【文献出处】 河北师范大学学报(自然科学版) ,Journal of Hebei Normal University(Natural Science Edition) , 编辑部邮箱 ,2008年05期
  • 【分类号】O159
  • 【下载频次】101
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