Results 41 to 50 of about 7,615 (257)
Chemical Engineering Transactions, 2015 In response to the fact that the physical education evaluation is unitary in evaluation content, has unclear target, fails to address comprehensive indexes and reaches general conclusion, this paper discusses the multiple evaluation of physical education
Y. Zhang
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Brain Sciences, 2020 We performed a bibliometric analysis of the peer-reviewed literature on vividness between 1900 and 2019 indexed by the Web of Science and compared it with the same analysis of publications on consciousness and mental imagery.
Stefanie Haustein +2 more
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Unitary similarity to a normal matrix
Linear Algebra and its Applications, 2012 The author gives several criteria of unitary similarity of a normal matrix \(A\) and any matrix \(B\) in terms of the Frobenius and spectral norms, characteristic polynomials, and traces of matrices.
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Transformations to rank structures by unitary similarity
Linear Algebra and its Applications, 2005 Let \(A\) be a complex \(n\times n\) matrix. A Krylov matrix of \(A\) is a matrix of the form \(K:=\left[ v,Av,...,A^{n-1}v\right] \) for some column vector \(v\). If \(A\) is nonderogatory, then \(v\) can be chosen so that \(K\) is nonsingular; in this case \(K^{-1}AK\) is equal to the Frobenius (companion) matrix for \(A\). A matrix \(L=\left[ l_{ij}\
BEVILACQUA, ROBERTO +2 more
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Advanced Science, EarlyView.The symmetry‐driven coexistence of altermagnetism and (anti)ferroelectricity in perovskites shows a strong dimensional dependence. Upon reducing the system from bulk to the two‐dimensional limit, only C‐type antiferromagnetic order retains ferroelectrically switchable altermagnetism, whereas A‐ and G‐type orders become conventional antiferromagnets ...
Zhou Cui +6 more
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An exciting Approach to Theoretical Spectroscopy
Advanced Science, EarlyView.ABSTRACT Theoretical spectroscopy, and more generally, electronic‐structure theory, are powerful concepts for describing the complex many‐body interactions in materials. They cover methods from ground‐state properties to lattice excitations and light‐matter interaction, including time‐resolved variants.
Martí Raya‐Moreno +29 more
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Parameterized quantum comb and simpler circuits for reversing unknown qubit-unitary operations
npj Quantum InformationQuantum combs play a vital role in characterizing and transforming quantum processes, with wide-ranging applications in quantum information processing.
Yin Mo +5 more
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Necessary and sufficient conditions for unitary similarity [PDF]
Journal of the Australian Mathematical Society, 1961 If A and B are two complex matrices and if U is a complex unitary matrix such that UAUCT = B (where UCT denotes the conjugate transpose of U), then A and B are said to be unitarily similar. Necessary and sufficient conditions that two matrices be unitarily similar have been dealt with in [5] (from the point of view of group representation theory) and ...
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Lithium Niobate Electro‐Optic Photonic Processor for Variational Quantum Eigensolver
Advanced Science, EarlyView.An integrated lithium‐niobate‐on‐insulator ququart processor implements an electro‐optically controlled photonic variational quantum eigensolver using single photons encoded in four path modes. Bell‐basis‐emulating ququart projective measurements reduce measurement settings while achieving chemical‐accuracy‐level molecular‐energy estimation.
Jinil Lee +11 more
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Antidiagonals of matrices in a unitary similarity orbit
Linear Algebra and its Applications, 1994 In the context of this paper, an antidiagonal of a matrix is a vector of matrix elements, running from the first column to the first row, at right angles to the main diagonal. A given \(n \times n\) matrix has one antidiagonal of length \(k\) for each \(k = 1, 2,\dots,n\).
Li, Chi-Kwong, Miranda, Maria Emília
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