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Two-dimensional filtering and the second derivative method

Geophysics, 1966
Abstract The data-processing operations of second derivative formulas are equivalent to two-dimensional digital filtering operations. Therefore any coefficient set can be described unambiguously by its two-dimensional frequency response.
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The use of second derivatives in the least-squares method

Journal of Molecular Spectroscopy, 1983
Abstract A modification of the least-squares method to include second derivatives is proposed. This is particularly advantageous in spectroscopic problems involving strong perturbations and level crossing. The equations for this modification are derived.
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Optimal Second Derivative Methods for Stiff Systems

1974
In implementing numerical methods for stiff ordinary differential equations several difficulties arise which are not usually encountered with methods designed for non-stiff equations. These difficulties include the choice of the basic formula, the choice of the iteration scheme to solve the implicit set of equations associated with each step, and the ...
openaire   +1 more source

Escaping local minima with local derivative-free methods: a numerical investigation

Optimization, 2022
Lindon Roberts   +2 more
exaly  

On the construction of second derivative diagonally implicit multistage integration methods for ODEs

Applied Numerical Mathematics, 2014
Gholamreza Hojjati   +2 more
exaly  

Trigonometrical fitting conditions for two derivative Runge-Kutta methods

Numerical Algorithms, 2017
Theodore Simos   +2 more
exaly  

On explicit two-derivative two-step Runge–Kutta methods

Computational and Applied Mathematics, 2018
Turgut Öziş
exaly  

Maximal order for second derivative general linear methods with Runge–Kutta stability

Applied Numerical Mathematics, 2011
Gholamreza Hojjati, Ali Abdi
exaly  

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