Search Results - subject:"symbolic computation"

Symbolic stationarization of dynamic equilibrium models

Canova, Fabio; Paulsen, Kenneth Sæterhagen - 2021

Dynamic equilibrium models are specifted to track time series with unit root-like behavior. Thus, unit roots are typically introduced and the optimality conditions adjusted. This step requires tedious algebra and often leads to algebraic mistakes, especially in models with several unit roots. We...

Persistent link: https://www.econbiz.de/10013373825

Symbolic stationarization of dynamic equilibrium models

Canova, Fabio; Paulsen, Kenneth Sæterhagen - 2021

Persistent link: https://www.econbiz.de/10012795579

Symbolic stationarization of dynamic equilibrium models

Canova, Fabio; Paulsen, Kenneth Sæterhagen - In: Journal of economic dynamics & control 154 (2023), pp. 1-21

Persistent link: https://www.econbiz.de/10014480314

More power through symbolic computation: Extending Stata by using the Maxima computer algebra system

Magno, Giovanni L. Lo - In: Stata Journal 15 (2015) 1, pp. 45-76

Maxima so that Maxima can be used for symbolic computation to transfer data from Stata to Maxima and to retrieve results from … computation can be easily used together with all the facilities supplied by Stata. In this environment, symbolic computation … Maxima. The cooperation between Stata and Maxima provides an environment for statistical analysis in which symbolic …

Persistent link: https://www.econbiz.de/10011265692

Nonlinear transformations for the simplification of unconstrained nonlinear optimization problems

Antal, Elvira; Csendes, Tibor; Virágh, János - In: Central European journal of operations research : CEJOR … 21 (2013) 4, pp. 665-684

Persistent link: https://www.econbiz.de/10010190843

An improved method for Darboux transformation for the coupled inhomogeneous nonlinear Schrödinger system from plasma physics and nonlinear optics

Liu, Yu-Ping; Gao, Yi-Tian; Wei, Guang-Mei - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 4, pp. 656-665

The coupled inhomogeneous nonlinear Schrödinger-type system which can be used to control soliton propagation and interaction in certain plasmas and optical fibers is investigated. An improved method for Darboux transformation (DT) is presented in more general forms by constructing an improved...

Persistent link: https://www.econbiz.de/10011058123

Integrability and soliton solutions for an N-coupled nonlinear Schrödinger system in optical fibers

Wang, Ming; Tian, Bo; Li, Min; Shan, Wen-Rui - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 19, pp. 4532-4542

auxiliary function, one- and two-soliton solutions are derived via symbolic computation. One-soliton solutions can present the …

Persistent link: https://www.econbiz.de/10011062174

Compression of bright bound soliton trains in the Bose–Einstein condensates with exponentially time-dependent atomic scattering length in an expulsive parabolic potential

Sun, Zhi-Yuan; Gao, Yi-Tian; Liu, Ying; Yu, Xin - In: Physica A: Statistical Mechanics and its Applications 391 (2012) 5, pp. 2111-2118

provided with symbolic computation to improve the number of matter density peaks within the given temporal range before the …

Persistent link: https://www.econbiz.de/10010590374

An improved Γ-Riccati Bäcklund transformation and its applications for the inhomogeneous nonlinear Schrödinger model from plasma physics and nonlinear optics

Liu, Yu-Ping; Gao, Yi-Tian; Wei, Guang-Mei - In: Physica A: Statistical Mechanics and its Applications 391 (2012) 3, pp. 535-543

symbolic computation. An improved Γ-Riccati Bäcklund transformation (Γ-R BT) is presented, which can generate successively a …

Persistent link: https://www.econbiz.de/10011062791

Darboux transformation and soliton solutions for the (2+1)-dimensional nonlinear Schrödinger hierarchy with symbolic computation

Zhang, Hai-Qiang; Tian, Bo; Li, Li-Li; Xue, Yu-Shan - In: Physica A: Statistical Mechanics and its Applications 388 (2009) 1, pp. 9-20

In this paper, the N-fold Darboux transformation is applied to the Lax pair associated with the (2+1)-dimensional nonlinear Schrödinger hierarchy. The general explicit formula for N-soliton solution is derived in terms of Vandermonde-like determinant expression. On the zero background, two...

Persistent link: https://www.econbiz.de/10011058510