Results 41 to 50 of about 1,655,330 (212)
, 2020 This archive contains the files required to reproduce the results and figures presented in Parallel tridiagonal matrix inversion with a hybrid multigrid--Thomas algorithm method, J. T. Parker, P. A. Hill, D. Dickinson and B. D. Dudson. Also available at
Hill, Peter Alec +3 more
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Determinants and inverses of perturbed periodic tridiagonal Toeplitz matrices
Advances in Difference Equations, 2019 In this paper, we deal mainly with a class of periodic tridiagonal Toeplitz matrices with perturbed corners. By matrix decomposition with the Sherman–Morrison–Woodbury formula and constructing the corresponding displacement of matrices we derive the ...
Yunlan Wei +3 more
doaj +1 more source
Computer Graphics Forum, EarlyView.Abstract We introduce mixed super‐circles, a position‐curvature formulation of the original dynamic 2D super‐helix model. Compared to the latter, purely curvature‐based model – the so‐called chained formulation –, the mixed formulation that we propose here drastically reduces the algorithmic complexity of the solving scheme – from quadratic to quasi ...
Emile Hohnadel +2 more
wiley +1 more source
Inversion of a tridiagonal jacobi matrix
Linear Algebra and its Applications, 1994 The author develops a formula for the inverse of a general tridiagonal matrix in terms of principal minors.
openaire +1 more source
Exit dynamics from organic certification in Quebec
Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, EarlyView.Abstract In Quebec, organic‐certification exits remained persistently high at 5% –7% annually over 2021–2025, while entries fell sharply from 10.8% to 3.4%. By 2025, exits exceeded entries for the first time, contracting the certified stock and reversing a decade of expansion.
Komla Avoumatsodo, Moustapha Thiam
wiley +1 more source
International Journal for Numerical Methods in Fluids, Volume 98, Issue 12, Page 1384-1422, December 2026.This study utilizes the Method of Manufactured Solutions (MMS) to validate high‐order compact finite‐difference schemes for 2D incompressible viscoelastic flows. By applying Oldroyd‐B and Giesekus models to a lid‐driven cavity benchmark, the researchers rigorously assessed numerical accuracy across varying Reynolds and Weissenberg numbers.
Juniormar Organista +5 more
wiley +1 more source
Condition numbers: Diagonal scaled tridiagonal matrix.
, 2015 The condition numbers of diagonal scaled TTri using the Lanczos connection method, the modified Hager’s method, and Octave are listed.Condition numbers: Diagonal scaled tridiagonal matrix.
Noriyuki Kushida (713716)
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Scalability of k-Tridiagonal Matrix Singular Value Decomposition
Mathematics, 2021 Singular value decomposition has recently seen a great theoretical improvement for k-tridiagonal matrices, obtaining a considerable speed up over all previous implementations, but at the cost of not ordering the singular values.
Andrei Tănăsescu +3 more
doaj +1 more source
Polymer Engineering &Science, Volume 66, Issue 10, Page 7413-7426, October 2026.A printhead‐mounted plasma nozzle activates the PEEK melt and the borosilicate print‐bed at the instant of contact. Only this simultaneous in‐situ activation of both interfaces yields reliable first‐layer adhesion (0.22 MPa). ABSTRACT Fused deposition modeling of poly‐ether‐ether‐ketone (PEEK) requires a high‐temperature build plate, yet PEEK does not ...
Paul Sager +3 more
wiley +1 more source
On the maximum likelihood degree of Gaussian graphical models
Bulletin of the London Mathematical Society, Volume 58, Issue 10, October 2026.Abstract In this paper we revisit the likelihood geometry of Gaussian graphical models. We give a detailed proof that the ML‐degree behaves monotonically on induced subgraphs. Furthermore, we complete a missing argument that the ML‐degree of the nth$n{\rm th}$ cycle is larger than 1 for any n⩾4$n\geqslant 4$, therefore completing the characterization ...
Carlos Améndola +3 more
wiley +1 more source