Generalized Diagonals in Positive Semi-Definite Matrices

Robert Angarone, Daniel Soskin
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Abstract

We describe all inequalities among generalized diagonals in positive semi-definite matrices. These turn out to be governed by a simple partial order on the symmetric group. This provides an analogue of results of Drake, Gerrish, and Skandera on inequalities among generalized diagonals in totally nonnegative matrices.
正半有限矩阵中的广义对角线
我们描述了正半定矩阵中广义对角线之间的所有不等式。结果表明,这些不等式受对称群上一个简单偏序的支配。这与 Drake、Gerrish 和 Skandera 关于完全非负矩阵中广义对角线间不等式的结果类似。
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