Results 61 to 70 of about 80,061 (162)
Earth and Space Science, Volume 11, Issue 7, July 2024.Abstract This study examines the accumulation, distribution, and mobility of Potentially Toxic Elements (PTEs) in the sediments of a low‐lying coastal drainage network (Ravenna, Italy). The aim is to understand the geochemical processes occurring between drainage water and canal bed sediments and assess factors affecting and driving PTE distribution ...
B. M. S. Giambastiani +4 more
wiley +1 more source
On the Use of Degree Theory for Nonlinear Multiparameter Eigenvalue Problems
, 1980 It is shown how existence questions for general multiparameter eigenvalue problems can be treated quite simply using degree theory. The equations to be solved are Wn(λ)xn = 0 ≠ xn, n = 1, 2,…, k, where λ ϵ R k and each Wn(λ) is a self-adjoint linear ...
P. Binding
semanticscholar +1 more source
Perturbation theory of multiparameter eigenvalue problems
Journal of Mathematical Analysis and Applications, 1988 Let \(T_ r\) and \(V_{rs}\) be linear selfadjoint operators in Hilbert spaces \({\mathfrak H}_ r\). Let \(\lambda_ s\) be complex parameters. Then it is considered the multiparameter system \[ (T_ r+\sum^{k}_{s=1}\lambda_ sV_{rs})u_ r=0,\quad r=1,...,k. \] The main objective is to study the influence of perturbations for the operators \(T_ r\).
openaire +2 more sources
IET Energy Systems Integration, Volume 6, Issue 2, Page 144-161, June 2024.Abstract Grid‐connected voltage source converters (VSCs) have been broadly applied in modern power system. However, instability issues may be triggered by the integration of grid‐connected VSCs, jeopardising the operation of the power grid. Conventional stability analysis methods can be utilised to derive system stability margins under nominal ...
Fuxin Ouyang +4 more
wiley +1 more source
The physics of exceptional points
, 2012 A short resume is given about the nature of exceptional points (EPs) followed by discussions about their ubiquitous occurrence in a great variety of physical problems. EPs feature in classical as well as in quantum mechanical problems.
Heiss, W. D.
core +1 more source
Signatures of three coalescing eigenfunctions
, 2011 Parameter dependent non-Hermitian quantum systems typically not only possess eigenvalue degeneracies, but also degeneracies of the corresponding eigenfunctions at exceptional points.
Demange, Gilles, Graefe, Eva-Maria
core +2 more sources
Two Complementary Block Macaulay Matrix Algorithms to Solve Multiparameter Eigenvalue Problems
Linear Algebra and its Applications, 2022 C. Vermeersch, B. De Moor
semanticscholar +1 more source
Optimal Gaussian Metrology for Generic Multimode Interferometric Circuit
, 2019 Bounds on the ultimate precision attainable in the estimation of a parameter in Gaussian quantum metrology are obtained when the average number of bosonic probes is fixed.
Facchi, Paolo +3 more
core +1 more source
Commuting matrices and multiparameter eigenvalue problems
, 1993 Bibliography: p. 164-179.
openaire +2 more sources
On the solution of rectangular multiparameter eigenvalue problems
arXiv.org, 2022 M. Hochstenbach +2 more
semanticscholar +1 more source