Results 11 to 20 of about 174,528 (270)
Dynamic Analysis for Soil - Structure Systems Using Dynamic Stiffness [PDF]
Engineering and Technology Journal, 2005 This paper gives exact dynamic stiffness coefficient for beam element with axial force embedded in elastic medium having normal and tangential soil reactions . These moduli of subgrade reactions are assumed to be constants along the length of the element
Mohamad Essa
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Fast and accurate con-eigenvalue algorithm for optimal rational approximations [PDF]
, 2012 The need to compute small con-eigenvalues and the associated con-eigenvectors of positive-definite Cauchy matrices naturally arises when constructing rational approximations with a (near) optimally small $L^{\infty}$ error. Specifically, given a rational
Beylkin, G., Haut, T. S.
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Computation of entanglement entropy in inhomogeneous free fermions chains by algebraic Bethe ansatz
SciPost Physics Proceedings, 2023 The computation of the entanglement entropy for inhomogeneous free fermions chains based on $q$-Racah polynomials is considered. The eigenvalues of the truncated correlation matrix are obtained from the diagonalization of the associated Heun operator via
Pierre-Antoine Bernard, Gauvain Carcone, Nicolas Crampé, Luc Vinet
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TASK Quarterly, 2021 This paper investigates the relationship between various types of spectral clustering methods and their kinship to relaxed versions of graph cut methods.
MIECZYSŁAW KŁOPOTEK +2 more
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Some properties on extended eigenvalues and extended eigenvectors
Tikrit Journal of Pure Science, 2019 In this paper, the study extended eigenvalues and extended eigenvectors, and we will investigate the and give for some concepts properties and result important, also we will find the and on the space, so U is Unilateral shift operator and .
Laith K. Shaakir, Anas A. Hijab
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A note on the eigensystem of the covariance matrix of dichotomous Guttman items
Frontiers in Psychology, 2015 We consider the sample covariance matrix for dichotomous Guttman items under a set of uniformity conditions, and obtain closed-form expressions for the eigenvalues and eigenvectors of the matrix.
Clintin P Davis-Stober +2 more
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Simple eigenvectors of unbounded operators of the type “normal plus compact” [PDF]
Opuscula Mathematica, 2015 The paper deals with operators of the form \(A=S+B\), where \(B\) is a compact operator in a Hilbert space \(H\) and \(S\) is an unbounded normal one in \(H\), having a compact resolvent.
Michael Gil'
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Exceptional Points in a Non-Markovian Anti-Parity-Time Symmetric System
Photonics, 2023 By studying the eigenvalues and eigenvectors of a non-Markovian anti parity-time (APT) symmetric system, we investigate the possibility of exceptional points (EPs) that may arise within it.
Andrew Wilkey +2 more
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On the asymptotics of a Robin eigenvalue problem [PDF]
, 2013 The considered Robin problem can formally be seen as a small perturbation of a Dirichlet problem. However, due to the sign of the impedance value, its associated eigenvalues converge point-wise to $-\infty$ as the perturbation goes to zero. We prove that
Cakoni, Fioralba +2 more
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Star Algebra Spectroscopy [PDF]
, 2001 The spectrum of the infinite dimensional Neumann matrices M^{11}, M^{12} and M^{21} in the oscillator construction of the three-string vertex determines key properties of the star product and of wedge and sliver states.
Ashoke Sen +21 more
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