Results 51 to 60 of about 2,168 (155)
Stability for Inference with Persistent Homology Rank Functions
Computer Graphics Forum, Volume 43, Issue 5, August 2024.Abstract Persistent homology barcodes and diagrams are a cornerstone of topological data analysis that capture the “shape” of a wide range of complex data structures, such as point clouds, networks, and functions. However, their use in statistical settings is challenging due to their complex geometric structure. In this paper, we revisit the persistent
Qiquan Wang +4 more
wiley +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
Magnetic Resonance in Medicine, Volume 92, Issue 1, Page 69-81, July 2024.Abstract Purpose The purpose of the study is to identify differences between axisymmetric diffusion kurtosis imaging (DKI) and standard DKI, their consequences for biophysical parameter estimates, and the protocol choice influence on parameter estimation. Methods Noise‐free and noisy, synthetic diffusion MRI human brain data is simulated using standard
Jan Malte Oeschger +2 more
wiley +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 \(T_ r\).
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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
Commuting matrices and multiparameter eigenvalue problems
, 1993 Bibliography: p. 164-179.
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Human health risk assessment of potentially toxic elements in soil and air particulate matter of automobile hub environments in Kumasi, Ghana. [PDF]
Toxicol Rep, 2023 Konadu FN +8 more
europepmc +1 more source
Constructive solutions for nonlinear multiparameter eigenvalue problems
Computers & Mathematics with Applications, 1998 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Abstract oscillation theorems for multiparameter eigenvalue problems
Journal of Differential Equations, 1983 AbstractWe prove abstract analogous of Klein's oscillation theorem by demonstrating the existence (and in some cases uniqueness) of eigenpairs with a given index for the multiparameter problem Tmxm = ∑n = 1k λnVmnxm, 0 ≠ xm ϵ Hm, m = 1 … k. (∗) Here Tm and Vmn are self-adjoint operators on Hilbert spaces Hm. The index is based on the number of negative
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Information geometry for multiparameter models: new perspectives on the origin of simplicity. [PDF]
Rep Prog Phys, 2022 Quinn KN +4 more
europepmc +1 more source