Results 11 to 20 of about 54,257 (145)
On eigenvalues, eigenvectors and singular values in robust stability analysis† [PDF]
International Journal of Control, 1984 Abstract Recent papers have examined the problem of robustness of the stability of multi-variable feedback systems to perturbations ΔG in matrix form. Attention has been primarily focused on the use of the maximal singular value δ ( ΔG). This paper considers how structured information on the uncertainty in each element Δ δ (9) con be used in a similar ...
D. H. OWENS, A. CHOTAI
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, 2022 In a series of recent papers the spectral behavior of the matrix sequence $\{Y_nT_n(f)\}$ is studied in the sense of the spectral distribution, where $Y_n$ is the main antidiagonal (or flip matrix) and $T_n(f)$ is the Toeplitz matrix generated by the function $f$, with $f$ being Lebesgue integrable and with real Fourier coefficients. This kind of study
Barbarino, Giovanni +3 more
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Regional Science Policy &Practice, EarlyView., 2022 Abstract Ecotourism can contribute to the conservation of environmental values, as well as to the development of positive synergies between agents in the tourism sector, tourists and the local population. The growing interest in tourism offers with low environmental impact, which support the local economy, translates into a competitive advantage for ...
Luís Quinta‐Nova, Dora Ferreira
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Accurate ordering of eigenvectors and singular vectors without eigenvalues and singular values
Linear Algebra and its Applications, 2003 The author identifies a structural property of an eigenvector of a symmetric tridiagonal matrix which can be used to rank and ordering eigenvectors without knowing the eigenvalues. This is extended to singular vectors of bidiagonal matrices. These procedures do not require floating-point operations and hence are immune from round-off errors.
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, 2012 With the overwhelming amount of textual information available in electronic formats on the web, there is a need for an efficient text summarizer capable of condensing large bodies of text into shorter versions while keeping the relevant information ...
Kim, Youn S.
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Non-Abelian Discrete Groups from the Breaking of Continuous Flavor Symmetries
, 2009 We discuss the possibility of obtaining a non-abelian discrete flavor symmetry from an underlying continuous, possibly gauged, flavor symmetry SU(2) or SU(3) through spontaneous symmetry breaking.
Adulpravitchai, A. +2 more
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Photonics of Topological Magnetic Textures
Advanced Optical Materials, EarlyView.Localized noncollinear magetic textures imprint their geometry and topology onto traversing photonic fields endowing them with orbital angular‐momentum, chirality, and magnetoelectric densities. Abstract Topological textures in magnetically ordered materials are an important case studies for fundamental research with promising applications in data ...
Vakhtang Jandieri +6 more
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Low-Rank Matrices on Graphs: Generalized Recovery & Applications [PDF]
, 2016 Many real world datasets subsume a linear or non-linear low-rank structure in a very low-dimensional space. Unfortunately, one often has very little or no information about the geometry of the space, resulting in a highly under-determined recovery ...
Perraudin, Nathanael +2 more
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Geometry of effective Hamiltonians
, 2008 We give a complete geometrical description of the effective Hamiltonians common in nuclear shell model calculations. By recasting the theory in a manifestly geometric form, we reinterpret and clarify several points.
A. Messiah +4 more
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Characterizing Real-Valued Multivariate Complex Polynomials and Their Symmetric Tensor Representations [PDF]
, 2016 In this paper we study multivariate polynomial functions in complex variables and the corresponding associated symmetric tensor representations. The focus is on finding conditions under which such complex polynomials/tensors always take real values.
Jiang, Bo, Li, Zhening, Zhang, Shuzhong
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