1) positive definite symmetrizable unitary factorization
正定可对称化酉分解
2) positive symmetrizablity
正定可对称化
3) symmetric positive definite solution
对称正定解
1.
The symmetric positive definite solutions of matrix equations (AX,XB)=(C,D) and AXB=C are considered in this paper.
讨论了矩阵方程（ＡＸ，ＸＢ）＝（Ｃ，Ｄ）和ＡＸＢ＝Ｃ的对称正定解。
2.
In this paper,we study the problem about the symmetric positive definite solution to a class of mixed-type Lyapunov matrix equations.
本文研究了一类混合型Lyapunov矩阵方程的对称正定解问题。
4) positive definite symmetrizable matrices and semidefinite symmetrizab|e matrices
可对称(半)正定化矩阵
5) symmetric positive semidefinite solution
对称半正定解
1.
The symmetric positive semidefinite solutions of the matrix equation (ATXA,BTXB)=(C,D) is considered in this paper.
讨论了矩阵方程（ＡＴＸＡ，ＢＴＸＢ）＝（Ｃ，Ｄ）的对称半正定解。
6) symmetric positive solution
对称正解
1.
In this paper,an existence result of symmetric positive solution for fourth-order boundary value problems is obtained by using the fixed-point index thoery.
讨论了一类四阶两点边值问题u(4)(t)=f(u(t),u(′t),u(″t)),t∈[0,1],u(0)=u(1)=u″(0)=u″(1)=0对称正解的存在性,用不动点指数理论证明了在一定条件下问题至少存在一个对称正解。
2.
The two iterative schemes of symmetric positive solution are studied for a two-point boundary value problem by the help of monotonic technique.
对一类两点边值问题给出了对称正解的两种单调迭代格式,主要工具是单调算子迭代技巧。
3.
In this paper,we discuss the existence of symmetric positive solutions for a kind of for fourth-order two point boundary value problem.
文章讨论了一类四阶两点边值问题对称正解的存在性,用不动点指数理论证明了在一定条件下,问题至少存在一个对称正解。
补充资料：对称与非对称
反映客观事物在结构、功能、时空上的特殊联系的范畴。对称指事物以一定的中介进行某种变化时出现的不变性，非对称指事物以一定的中介进行某种变化时出现的可变性。在自然界中普遍存在，形式多样。对称有空间对称(包括形象对称和结构对称)、时间对称、概念对称等。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条