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2篇 您的检索式:作者名="ZHOU AnWa"
    题名 作者 年代 出处 被引量
1Completely positive tensors in the complex field显示文摘In this paper, we introduce the complex completely positive tensor, which has a symmetric complex decomposition with all real and imaginary parts of the decomposition vectors being non-negative. Some properties of the complex completely positive tensor are given. A semidefinite algorithm is also proposed for checking whether a complex tensor is complex completely positive or not. If a tensor is not complex completely positive, a certificate for it can be obtained;if it is complex completely positive, a complex completely positive decomposition can be obtained.Anwa Zhou Jinyan Fan Qingwen Wang 2020Science China Mathematics2020,63,6:0
2Partially positive matrices显示文摘A real n × n symmetric matrix P is partially positive(PP) for a given index set I ? {1,..., n} if there exists a matrix V such that V(I, :) 0 and P = V VT. We give a characterization of PP-matrices. A semidefinite algorithm is presented for checking whether a matrix is partially positive or not. Its properties are studied. A PP-decomposition of a matrix can also be obtained if it is partially positive.ZHOU AnWa FAN JinYan 2015Science China Mathematics2015,58,10:0
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