Hadamard-type inequalities for k-positive matrices

Hadamard-type inequalities for k-positive matrices
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k 正矩阵的 Hadamard 型不等式

DOI:
10.1016/j.laa.2021.11.018
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发表时间:
2022
影响因子:
1.1
通讯作者:
Le, Nam Q.
Le, Nam Q.
中科院分区:
数学3区
文献类型:
--
作者:
Le, Nam Q.

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对于一类对称矩阵k-正矩阵,其特征值的第m个初等对称函数对所有m≤k都是正的,我们建立了hadamard型不等式。这些矩阵在偏微分方程中的k- hessian方程的研究中很自然地出现。对于每一个k正矩阵,我们证明其大小为k的主次矩阵的和不大于其对角线项的第k个初等对称函数。k= n的情况对应于正定矩阵的经典Hadamard不等式。得到了一些结果。
We establish Hadamard-type inequalities for a class of symmetric matrices called k-positive matrices for which the m-th elementary symmetric functions of their eigenvalues are positive for all m≤ k. These matrices arise naturally in the study of k-Hessian equations in Partial Differential Equations. For each k-positive matrix, we show that the sum of its principal minors of size k is not larger than the k-th elementary symmetric function of their diagonal entries. The case k= n corresponds to the classical Hadamard inequality for positive definite matrices. Some consequences are also obtained.
论完全非线性方程理论中的新结构
DOI: --
发表时间: 2018
影响因子: --
作者:
N. Ivochkina;N. Filimonenkova
通讯作者: N. Filimonenkova
DOI: 10.4171/rmi/1306
发表时间: 2022
期刊: Revista Matemática Iberoamericana
影响因子: --
作者:
Le, Nam Q.
通讯作者: Le, Nam Q.