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math.RA2022
On the Phases of a Semi-Sectorial Matrix
Li Qiu, Dan Wang, Xin Mao +1
In this paper, we extend the definition of phases of sectorial matrices to those of semi-sectorial matrices, which are possibly singular. Properties of the phases are also extended…
math.RA2019
On the Phases of a Complex Matrix
Dan Wang, Wei Chen, Sei Zhen Khong +1
In this paper, we define the phases of a complex sectorial matrix to be its canonical angles, which are uniquely determined from a sectorial decomposition of the matrix. Various pr…