# A contribution to Runge-Kutta formulas of the 7th order with rational coefficients for systems of differential equations of the first order

Aplikace matematiky (1984)

• Volume: 29, Issue: 6, page 411-422
• ISSN: 0862-7940

top

## Abstract

top
The purpose of this article is to find the 7th order formulas with rational parameters. The formulas are of the 11th stage. If we compare the coefficients of the development ${\sum }_{i=1}^{\infty }\frac{{h}^{i}}{i!}\frac{{d}^{i-1}}{d{x}^{i-1}}𝐟\left[x,𝐲\left(x\right)\right]$ up to ${h}^{7}$ with the development given by successive insertion into the formula $h.{f}_{i}\left({k}_{0},{k}_{1},...,{k}_{i-1}\right)$ for $i=1,2,...,10$ and $k={\sum }_{i=0}^{10}{p}_{i},{k}_{i}$ we obtain a system of 59 condition equations with 65 unknowns (except, the 1st one, all equations are nonlinear). As the solution of this system we get the parameters of the 7th order Runge-Kutta formulas as rational numbers.

## How to cite

top

Huťa, Anton, and Penjak, Vladimír. "A contribution to Runge-Kutta formulas of the 7th order with rational coefficients for systems of differential equations of the first order." Aplikace matematiky 29.6 (1984): 411-422. <http://eudml.org/doc/15375>.

@article{Huťa1984,
abstract = {The purpose of this article is to find the 7th order formulas with rational parameters. The formulas are of the 11th stage. If we compare the coefficients of the development $\sum ^\infty _\{i=1\} \frac\{h^i\}\{i!\} \frac\{d^\{i-1\}\}\{dx^\{i-1\}\} \mathbf \{f\}\left[x,\mathbf \{y\}(x)\right]$ up to $h^7$ with the development given by successive insertion into the formula $h.f_i(k_0,k_1,\ldots , k_\{i-1\})$ for $i=1,2,\ldots , 10$ and $k=\sum ^\{10\}_\{i=0\} p_i, k_i$ we obtain a system of 59 condition equations with 65 unknowns (except, the 1st one, all equations are nonlinear). As the solution of this system we get the parameters of the 7th order Runge-Kutta formulas as rational numbers.},
author = {Huťa, Anton, Penjak, Vladimír},
journal = {Aplikace matematiky},
keywords = {Runge-Kutta formulas; rational coefficients; systems; 7th order formulas; Runge-Kutta formulas; rational coefficients; systems; 7th order formulas},
language = {eng},
number = {6},
pages = {411-422},
publisher = {Institute of Mathematics, Academy of Sciences of the Czech Republic},
title = {A contribution to Runge-Kutta formulas of the 7th order with rational coefficients for systems of differential equations of the first order},
url = {http://eudml.org/doc/15375},
volume = {29},
year = {1984},
}

TY - JOUR
AU - Huťa, Anton
AU - Penjak, Vladimír
TI - A contribution to Runge-Kutta formulas of the 7th order with rational coefficients for systems of differential equations of the first order
JO - Aplikace matematiky
PY - 1984
PB - Institute of Mathematics, Academy of Sciences of the Czech Republic
VL - 29
IS - 6
SP - 411
EP - 422
AB - The purpose of this article is to find the 7th order formulas with rational parameters. The formulas are of the 11th stage. If we compare the coefficients of the development $\sum ^\infty _{i=1} \frac{h^i}{i!} \frac{d^{i-1}}{dx^{i-1}} \mathbf {f}\left[x,\mathbf {y}(x)\right]$ up to $h^7$ with the development given by successive insertion into the formula $h.f_i(k_0,k_1,\ldots , k_{i-1})$ for $i=1,2,\ldots , 10$ and $k=\sum ^{10}_{i=0} p_i, k_i$ we obtain a system of 59 condition equations with 65 unknowns (except, the 1st one, all equations are nonlinear). As the solution of this system we get the parameters of the 7th order Runge-Kutta formulas as rational numbers.
LA - eng
KW - Runge-Kutta formulas; rational coefficients; systems; 7th order formulas; Runge-Kutta formulas; rational coefficients; systems; 7th order formulas
UR - http://eudml.org/doc/15375
ER -

## References

top
1. W. Kutta, Beitrag zur näherungsweisen Integration totaler Differentialgleichungen, Z. Math. und Phys. 46 (1901), 435-453. (1901) Zbl33.0355.07
2. E. J. Nyström, Über die numerische Integration von Differentialgleichungen, Acta Soc. Sci. Fennicae 50 (1926), 13. (1926) Zbl51.0427.01
3. A. Huťa, Une amélioration de la méthode de Runge-Kutta-Nyström pour la résolution numérique des équations différentielles du premier ordre, Acta Fac. Rer. Nat. Univ. Comen. 1 (1956), IV-VI, 201-224. (1956) Zbl0074.10803MR0097156
4. A. Huťa, Contribution à la formule de sixième ordre dans la méthode de Runge-Kutta-Nyström, Acta Fac. Rer. Nat. Univ. Comen 2 (1957), I-II, 21 - 24. (1957) Zbl0087.32504MR0097157
5. V. Penjak, Condition equations of the 7th order Runge-Kutta methods, Štrbské Pleso 1982. Proceedings from the symposium on the numerical methods and graph theory, 105-108. (Slovak.) (1982)
6. A. Huťa, The Algorithm for Computation of the n-order Formula for Numerical Solution of Initial Value Problem of Differential Equations, 5th Symposium on Algorithms - Algorithms' 79. Proceedings of Lectures (1979), 53 - 61. (1979)

## NotesEmbed?

top

You must be logged in to post comments.

To embed these notes on your page include the following JavaScript code on your page where you want the notes to appear.

Only the controls for the widget will be shown in your chosen language. Notes will be shown in their authored language.

Tells the widget how many notes to show per page. You can cycle through additional notes using the next and previous controls.

Note: Best practice suggests putting the JavaScript code just before the closing </body> tag.