Results 11 to 20 of about 607,065 (288)
Explicit expressions for Virasoro singular vectors [PDF]
Journal of High Energy PhysicsWe present two explicit expressions for generic singular vectors of type (r, s) of the Virasoro algebra. These results follow from the paper of Bauer et al. which presented recursive methods to construct the vectors.
Gérard M. T. Watts
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Sharp error bounds for Ritz vectors and approximate singular vectors [PDF]
Mathematics of Computation, 2020 We derive sharp bounds for the accuracy of approximate eigenvectors (Ritz vectors) obtained by the Rayleigh-Ritz process for symmetric eigenvalue problems. Using information that is available or easy to estimate, our bounds improve the classical Davis-Kahan
Nakatsukasa, Yuji
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IEEE Access, 2020 The conventional singular spectrum analysis is to divide a signal into segments where there is only one non-overlapping point between two consecutive segments.
Xinpeng Wang, Bingo Wing-Kuen Ling
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Singular Vectors and Time-Dependent Normal Modes of a Baroclinic Wave-Mean Oscillation [PDF]
Linear disturbance growth is studied in a quasigeostrophic baroclinic channel model with several thousand degrees of freedom. Disturbances to an unstable, nonlinear wave-mean oscillation are analyzed, allowing the comparison of singular vectors and time ...
Wolfe, Christopher L. +1 more
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On the singular value decomposition of (skew-)involutory and (skew-)coninvolutory matrices
Special Matrices, 2020 The singular values σ > 1 of an n × n involutory matrix A appear in pairs (σ, 1σ{1 \over \sigma }). Their left and right singular vectors are closely connected. The case of singular values σ = 1 is discussed in detail. These singular values may appear in
Faßbender Heike, Halwaß Martin
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An Out of Memory tSVD for Big-Data Factorization
IEEE Access, 2020 Singular value decomposition (SVD) is a matrix factorization method widely used for dimension reduction, data analytics, information retrieval, and unsupervised learning.
Hector Carrillo-Cabada +4 more
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Singularity Problem for Interacting Massive Vectors
Physical Review Letters, 2022 Interacting massive spin-1 fields have been widely used in cosmology and particle physics. We obtain a new condition on the validity of the classical limit of these theories related to the non-trivial constraints that exist for vector field components.
Zong-Gang Mou, Hong-Yi Zhang
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FUSION AND THE NEVEU-SCHWARZ SINGULAR VECTORS [PDF]
International Journal of Modern Physics A, 1994 Bauer, di Francesco, Itzykson and Zuber recently proposed an algorithm to construct all singular vectors of the Virasoro algebra. It is based on the decoupling of (already known) singular fields in the fusion process. We show the extension of their algorithm to the Neveu-Schwarz superalgebra.
Benoit, Louis, Saint-Aubin, Yvan
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SINGULAR VECTORS OF THE TOPOLOGICAL CONFORMAL ALGEBRA [PDF]
International Journal of Modern Physics A, 1996 A general construction is found for “topological” singular vectors of the twisted N=2 superconformal algebra. It demonstrates many parallels with the known construction for affine sℓ(2) singular vectors due to Malikov–Feigin–Fuchs, but is formulated independently of the latter.
Semikhatov, A. M., Tipunin, I. Yu.
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DIGITAL WATERMARKING IN THE SINGULAR VECTOR DOMAIN [PDF]
International Journal of Image and Graphics, 2008 Many current watermarking algorithms insert data in the spatial or transform domains like the discrete cosine, the discrete Fourier, and the discrete wavelet transforms. In this paper, we present a data-hiding algorithm that exploits the singular value decomposition (SVD) representation of the data.
Rashmi Agarwal, M. S. Santhanam
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