Results 31 to 40 of about 80,061 (162)

Asymptotic spectrum of multiparameter eigenvalue problems [PDF]

Proceedings of the Edinburgh Mathematical Society, 1996
Results are given for the asymptotic spectrum of a multiparameter eigenvalue problem in Hilbert space. They are based on estimates for eigenvalues derived from the minim un-maximum principle. As an application, a multiparameter Sturm-Liouville problem is considered.
openaire   +1 more source

Computation of multiple eigenvalues and generalized eigenvectors for matrices dependent on parameters

, 2005
The paper develops Newton's method of finding multiple eigenvalues with one Jordan block and corresponding generalized eigenvectors for matrices dependent on parameters.
Anderson, Antoniou, Arnold, Arnold, Berry, Burke, Demmel, Dobson, Edelman, Edelman, Elmroth, Elmroth, Fairgrieve, Gantmacher, Golub, Golub, Heiss, Kirillov, Kirillov, Korsch, Kublanovskaya, Kågström, Kågström, Latinne, Lewis, Lippert, Mailybaev, Mailybaev, Mailybaev, Mailybaev, Moro, Ruhe, Seyranian, Seyranian, Seyranian, Traviesas, Vishik, Wilkinson, Wilkinson   +38 more
core   +1 more source

Efficient and Accurate Computation of Arbitrary‐Order Eigenpair Sensitivities Using Hypercomplex Automatic Differentiation

International Journal for Numerical Methods in Engineering, Volume 126, Issue 24, 30 December 2025.
ABSTRACT Eigenvalue and eigenvector sensitivities with respect to design parameters are crucial for advancing design, optimization, and uncertainty quantification in structural systems. This paper introduces a novel, efficient, and general numerical method for computing arbitrary‐order sensitivities of eigenpairs in self‐adjoint undamped and ...
Juan C. Velasquez‐Gonzalez, Mauricio Aristizabal, Juan David Navarro, Harry R. Millwater, David Restrepo   +4 more
wiley   +1 more source

Lost in Translation: Harmonizing Terminology and Defining Mathematical Tools for Panel Optimization

Cytometry Part A, Volume 107, Issue 12, Page 793-816, December 2025.
ABSTRACT Spectral flow cytometry has evolved from a contentious idea into a mainstay of high‐parameter single‐cell analysis, yet its vocabulary (and the statistical reasoning behind it) remains a patchwork of overlapping, sometimes contradictory terms.
Bartek Rajwa, Mario Roederer
wiley   +1 more source

The sloppy model universality class and the Vandermonde matrix

, 2006
In a variety of contexts, physicists study complex, nonlinear models with many unknown or tunable parameters to explain experimental data. We explain why such systems so often are sloppy; the system behavior depends only on a few `stiff' combinations of ...
C. Lanczos, Christopher R. Myers, D. Hilbert, Fergal P. Casey, James P. Sethna, Joshua J. Waterfall, K. Gadkar, Kevin S. Brown, M. L. Mehta, Piet W. Brouwer, Ryan N. Gutenkunst, V. Marčenko, Veit Elser, W. H. Press   +13 more
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Computing all Pairs (λ,μ) Such That λ is a Double Eigenvalue of Α + μΒ [PDF]

, 2010
Double eigenvalues are not generic for matrices without any particular structure. A matrix depending linearly on a scalar parameter, Α + μΒ, will, however, generically have double eigenvalues for some values of the parameter μ. In this paper, we consider
Jarlebring, Elias, Kvaal, Simen, Michiels, Wim   +2 more
core   +1 more source

Functional Diversity of Neotropical Aquatic Hyphomycetes: Insights Into Environmental Drivers

Biotropica, Volume 57, Issue 6, November 2025.
Subtropical streams host diverse hyphomycete assemblages than tropical one's. Larger saprotrophs with diverse conidia shapes dominate in subtropical areas. Cold and oxygenated waters have a positive effect on functional diversity. Poor litter in tropical favored the dominance of wood saprotrophs and endophytes.
Renan de Souza Rezende, Adriana Oliveira Medeiros, Raquel de Brito, Luiz Ubiratan Hepp, José Francisco Gonçalves Junior, Marcelo da Silva Moretti, Yara Moretto   +6 more
wiley   +1 more source

Two-parameter Sturm-Liouville problems [PDF]

, 2012
This paper deals with the computation of the eigenvalues of two-parameter Sturm- Liouville (SL) problems using the Regularized Sampling Method, a method which has been effective in computing the eigenvalues of broad classes of SL problems (Singular, Non ...
Boucherif, A., Chanane, B.
core  

Causes and effects between economically important phenotypic traits in pacu Piaractus mesopotamicus

Aquaculture, Fish and Fisheries, Volume 5, Issue 5, October 2025.
Understand cause and effect relationships between morphometric and carcass traits are fundamental for genetic improvement programs. Uni and multivariate techniques applied to economically important traits in fish; Path analysis is a technique widely used in several areas, however its applications in aquaculture are scarce; Abstract Genetic selection ...
Alene Santos Souza, Adriano Carvalho Costa, Moacyr Antonio Serafini, Rafael Vilhena Reis Neto, Ivan Bezerra Allaman, Rilke Tadeu Fonseca de Freitas, Marília Parreira Fernandes, Rafaella Machado dos Santos de Medeiros, Matheus Barp Pierozan, Liege Dauny Horn, Hortência Aparecida Botelho, Isabel Rodrigues de Rezende, Joel Jorge Nuvunga   +12 more
wiley   +1 more source

Does Local Bed Shear Stress Predict the Occurrence of Freshwater Mussels?

Ecohydrology, Volume 18, Issue 7, October‐November 2025.
ABSTRACT The relationship between near‐bed hydrodynamics, pore‐water chemistry and the presence of unionids was examined in a well‐characterized multispecies mussel bed (26 species; ~24 mussels m−2; 70% gravel, 20% cobble and 10% sand) within a lowland river (Sydenham River) in southern Ontario, Canada.
Julian Lum, Todd J. Morris, Josef Daniel Ackerman   +2 more
wiley   +1 more source