Results 11 to 20 of about 510,471 (302)
Partial Identifiability for Nonnegative Matrix Factorization
SIAM Journal on Matrix Analysis and Applications, 2023 27 pages, 8 figures, 7 examples. This third version makes minor modifications. Paper accepted in SIAM J.
Nicolas Gillis, Róbert Rajkó
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Novel Bäcklund Transformations for Integrable Equations
Mathematics, 2022 In this paper, we construct a new matrix partial differential equation having a structure and properties which mirror those of a matrix fourth Painlevé equation recently derived by the current authors.
Pilar Ruiz Gordoa, Andrew Pickering
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Matrix-free preconditioning using partial matrix estimation [PDF]
BIT Numerical Mathematics, 2006 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Cullum, J. K., Tůma, M. (Miroslav)
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Spinning partial waves for scattering amplitudes in d dimensions
Journal of High Energy Physics, 2023 Partial wave decomposition is one of the main tools within the modern S-matrix studies. We present a method to compute partial waves for 2 → 2 scattering of spinning particles in arbitrary spacetime dimension. We identify partial waves as matrix elements
Ilija Burić +2 more
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Doubly constrained totally positive line insertion
Special Matrices, 2020 It is shown that in any TP matrix, a line (row or column) with two speci˝ed entries in any positions (and the others appropriately chosen) may be inserted in any position, as long as the two entries are consistent with total positivity.
Johnson Charles R., Allen David W.
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Sparse Partial Correlation Estimation With Scaled Lasso and Its GPU-Parallel Algorithm
IEEE Access, 2023 Sparse partial correlation estimation is a popular topic in high-dimensional data analysis, where nonzero partial correlation represents the conditional dependency between two corresponding variables given the other variables.
Younsang Cho +3 more
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On the partial transpose of a Haar unitary matrix
Studia Mathematica, 2022 We consider the effect of a partial transpose on the limit $*$-distribution of a Haar distributed random unitary matrix. If we fix, $b$, the number of blocks, we show that the partial transpose can be decomposed into a sum of $b$ matrices which are asymptotically free and identically distributed.
Mingo, James A. +2 more
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Partial scaling transform of multiqubit states as a criterion of separability [PDF]
, 2005 The partial scaling transform of the density matrix for multiqubit states is introduced to detect entanglement of the quantum state. The transform contains partial transposition as a special case. The scaling transform corresponds to partial time scaling
Man'ko, V. I. +10 more
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Reduction of system of partial derivatives with nilpotent matrix
Lietuvos Matematikos Rinkinys, 2000 In this paper we explain the method of squaring of the partial derivatives system with nilpotent matrix into the system with simpler matrix next to the solving function.
Donatas Jurgaitis +1 more
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Partial derivative of matrix functions with respect to a vector variable
Vietnam Journal of Mechanics, 2008 The partial derivatives of scalar functions and vector functions with respect to a vector variable are defined and used in dynamics of multibody systems.
Nguyen Van Khang
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