Results 61 to 70 of about 276,787 (219)
A constrained eigenvalue problem [PDF]
Linear Algebra and its Applications, 1989 ETH, Eidgenössische Technische Hochschule Zürich, Institut für Informatik, Fachgruppe Wissenschaftliches Rechnen ...
Gander, Walter +2 more
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Controllability of Brain Neural Networks in Learning Disorders—A Geometric Approach
Mathematics, 2022 The human brain can be interpreted mathematically as a linear dynamical system that shifts through various cognitive regions promoting more or less complicated behaviors. The dynamics of brain neural network play a considerable role in cognitive function
Maria Isabel García-Planas +1 more
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Spectral characterizations of anti-regular graphs [PDF]
Linear Algebra and Its Applications, Vol. 557, pp. 84-104, 2018, 2018 We study the eigenvalues of the unique connected anti-regular graph $A_n$. Using Chebyshev polynomials of the second kind, we obtain a trigonometric equation whose roots are the eigenvalues and perform elementary analysis to obtain an almost complete characterization of the eigenvalues.
arxiv +1 more source
H$^+$-Eigenvalues of Laplacian and Signless Laplacian Tensors [PDF]
, 2013 We propose a simple and natural definition for the Laplacian and the signless Laplacian tensors of a uniform hypergraph. We study their H$^+$-eigenvalues, i.e., H-eigenvalues with nonnegative H-eigenvectors, and H$^{++}$-eigenvalues, i.e., H-eigenvalues ...
L. Qi
semanticscholar +1 more source
Comparison results for eigenvalues of curlcurl operator and Stokes operator [PDF]
, 2018 This paper mainly establishes comparison results for eigenvalues of $\curl\curl$ operator and Stokes operator. For three-dimensional simply connected bounded domains, the $k$-th eigenvalue of $\curl\curl$ operator under tangent boundary condition or normal boundary condition is strictly smaller than the $k$-th eigenvalue of Stokes operator.
arxiv +1 more source
Eigenvalues and perfect matchings [PDF]
Linear Algebra and its Applications, 2005 AbstractWe give sufficient conditions for existence of a perfect matching in a graph in terms of the eigenvalues of the Laplacian matrix. We also show that a distance-regular graph of degree k is k-edge-connected.
Brouwer, A.E., Haemers, W.H.
openaire +4 more sources
Shape optimization for an elliptic operator with infinitely many positive and negative eigenvalues
Advances in Nonlinear Analysis, 2018 This paper deals with an eigenvalue problem possessing infinitely many positive and negative eigenvalues. Inequalities for the smallest positive and the largest negative eigenvalues, which have the same properties as the fundamental frequency, are ...
Bandle Catherine, Wagner Alfred
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, 2014 Fil: Fernandez Bonder, Julian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Investigaciones Matemáticas "Luis A. Santaló". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Matemáticas "Luis A.
Fernandez Bonder, Julian +2 more
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Determining the Number of Factors from Empirical Distribution of Eigenvalues
Review of Economics and Statistics, 2010 We develop a new estimator of the number of factors in the approximate factor models. The estimator works well even when the idiosyncratic terms are substantially correlated.
A. Onatski
semanticscholar +1 more source