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Some of the next articles are maybe not open access.

Design of Damping and Control Matrices by Modification of Eigenvalues and Eigenvectors [PDF]

open access: goldShock and Vibration, 1994
Direct methods are presented, in state space, for design of control matrices for structures with and without initial viscous damping. given the desired changes in the eigenvalues and eigenvectors.
Vernon H. Neubert
doaj   +2 more sources

On Differentiating Eigenvalues and Eigenvectors [PDF]

open access: greenEconometric Theory, 1985
Let X0 be a square matrix (complex or otherwise) and u0 a (normalized) eigenvector associated with an eigenvalue λo of X0, so that the triple (X0, u0, λ0) satisfies the equations Xu = λu, . We investigate the conditions under which unique differentiable functions λ(X) and u(X) exist in a neighborhood of X0 satisfying λ(X0) = λO, u(X0) = u0, Xu = λu ...
Jan R. Magnus
openalex   +7 more sources

Dirac eigenvalues and eigenvectors at finite temperature [PDF]

open access: green, 2001
We investigate the eigenvalues and eigenvectors of the staggered Dirac operator in the vicinity of the chiral phase transition of quenched SU(3) lattice gauge theory. We consider both the global features of the spectrum and the local correlations. In the
M. Göckeler   +5 more
openalex   +3 more sources

Differentiable roots, eigenvalues, and eigenvectors [PDF]

open access: yesIsrael Journal of Mathematics, 2014
We determine the conditions for the existence of $C^p$-roots of curves of monic complex polynomials as well as for the existence of $C^p$-eigenvalues and $C^p$-eigenvectors of curves of normal complex matrices.
Rainer, Armin
openaire   +6 more sources

On estimators for eigenvalue/eigenvector approximations [PDF]

open access: hybridMathematics of Computation, 2008
We consider a large class of residuum based \textit{; ; ; ; ; a posteriori}; ; ; ; ; eigenvalue/eigenvector estimates and present an abstract framework for proving their asymptotic exactness. Equivalence of the estimator and the error is also established.
Luka Grubišić, Jeffrey S. Ovall
openalex   +4 more sources

DTI Brain Template Construction Based on Gaussian Averaging

open access: yesChinese Journal of Magnetic Resonance, 2022
The tensor data of subjects are usually averaged linearly over multiple channels to obtain the tensor template. However, linear averaging ignores the vector information in the tensor. Additionally, it will render the interface between the gray matter and
DENG Lan, WANG Yuan-jun
doaj   +1 more source

Arbitrary-Order Sensitivity Analysis of Eigenfrequency Problems with Hypercomplex Automatic Differentiation (HYPAD)

open access: yesApplied Sciences, 2023
The calculation of accurate arbitrary-order sensitivities of eigenvalues and eigenvectors is crucial for structural analysis applications, including topology optimization, system identification, finite element model updating, damage detection, and fault ...
Juan C. Velasquez-Gonzalez   +5 more
doaj   +1 more source

Eigenvalue Expansion of Nonsymmetric Linear Compact Operators in Hilbert Space

open access: yesCommunications in Advanced Mathematical Sciences, 2021
For a symmetric linear compact resp. symmetric densely defined linear operator with compact inverse, expansion theorems in series of eigenvectors are known.
Ludwig Kohaupt
doaj   +1 more source

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