Results 1 to 10 of about 30,661 (276)

Classification of secant defective manifolds near the extremal case

open access: yes, 2012
Let $X\subset \P^N$ be a nondegenerate irreducible closed subvariety of dimension $n$ over the field of complex numbers and let $SX\subset\P^N$ be its secant variety.
Han, Kangjin
core   +1 more source

A Two-Step Matrix-Free Secant Method for Solving Large-Scale Systems of Nonlinear Equations

open access: yesJournal of Applied Mathematics, 2012
We propose an approach to enhance the performance of a diagonal variant of secant method for solving large-scale systems of nonlinear equations. In this approach, we consider diagonal secant method using data from two preceding steps rather than a single
M. Y. Waziri, W. J. Leong, M. Mamat
doaj   +1 more source

Numerical Solving Method for Jiles-Atherton Model and Influence Analysis of the Initial Magnetic Field on Hysteresis

open access: yesMathematics, 2022
The Jiles-Atherton model was widely used in the description of the system with hysteresis, and the solution for the model was important for real-time and high-precision control.
Guangming Xue   +5 more
doaj   +1 more source

Multipoint secant and interpolation methods with nonmonotone line search for solving systems of nonlinear equations

open access: yes, 2017
Multipoint secant and interpolation methods are effective tools for solving systems of nonlinear equations. They use quasi-Newton updates for approximating the Jacobian matrix.
Burdakov, Oleg, Kamandi, Ahmad
core   +1 more source

Secant-like methods

open access: yes, 2017
Capítulo del libro "Iterative Methods and Their Dynamics with Applications"
Argyros, Ioannis K   +1 more
openaire   +2 more sources

Secant penalized BFGS: a noise robust quasi-Newton method via penalizing the secant condition

open access: yesComputational Optimization and Applications, 2023
38 pages, 3 figures; corrected errors, added numerical ...
Brian Irwin, Eldad Haber
openaire   +3 more sources

Fibers of Generic Projections

open access: yes, 2009
Let X be a smooth projective variety of dimension n in P^r. We study the fibers of a general linear projection pi: X --> P^{n+c}, with c > 0. When n is small it is classical that the degree of any fiber is bounded by n/c+1, but this fails for n >> 0.
David Eisenbud   +7 more
core   +2 more sources

3D numerical modelling of twisting cracks under bending and torsion of skew notched beams [PDF]

open access: yes, 2017
The testing of mode III and mixed mode failure is every so often encountered in the dedicated literature of mechanical characterization of brittle and quasi-brittle materials.
Benedetti, Lorenzo   +2 more
core   +5 more sources

Tensor decomposition and homotopy continuation [PDF]

open access: yes, 2016
A computationally challenging classical elimination theory problem is to compute polynomials which vanish on the set of tensors of a given rank. By moving away from computing polynomials via elimination theory to computing pseudowitness sets via ...
Bernardi, Alessandra   +3 more
core   +4 more sources

Improved numerical approach for time-independent Gross-Pitaevskii nonlinear Schroedinger equation

open access: yes, 1999
In the present work, we improve a numerical method, developed to solve the Gross-Pitaevkii nonlinear Schroedinger equation. A particular scaling is used in the equation, which permits to evaluate the wave-function normalization after the numerical ...
A. Gammal   +9 more
core   +2 more sources

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