On transformations z ( t ) = y ( ϕ ( t ) ) of ordinary differential equations

Václav Tryhuk

Czechoslovak Mathematical Journal (2000)

  • Volume: 50, Issue: 3, page 509-518
  • ISSN: 0011-4642

Abstract

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The paper describes the general form of an ordinary differential equation of the order n + 1 ( n 1 ) which allows a nontrivial global transformation consisting of the change of the independent variable. A result given by J. Aczél is generalized. A functional equation of the form f s , v , w 11 v 1 , ... , j = 1 n w n j v j = j = 1 n w n + 1 j v j + w n + 1 n + 1 f ( x , v , v 1 , ... , v n ) , where w i j = a i j ( x 1 , ... , x i - j + 1 ) are given functions, w n + 1 1 = g ( x , x 1 , ... , x n ) , is solved on .

How to cite

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Tryhuk, Václav. "On transformations $z(t)=y(\varphi (t))$ of ordinary differential equations." Czechoslovak Mathematical Journal 50.3 (2000): 509-518. <http://eudml.org/doc/30579>.

@article{Tryhuk2000,
abstract = {The paper describes the general form of an ordinary differential equation of the order $n+1$$(n\ge 1)$ which allows a nontrivial global transformation consisting of the change of the independent variable. A result given by J. Aczél is generalized. A functional equation of the form \[ f\biggl (s, v, w\_\{11\}v\_\{1\}, \ldots , \sum \_\{j=1\}^\{n\}w\_\{nj\}v\_\{j\}\biggr ) = \sum \_\{j=1\}^\{n\}w\_\{n+1 j\}v\_\{j\} + w\_\{n+1 n+1\}f(x, v, v\_\{1\}, \ldots , v\_\{n\}), \] where $ w_\{ij\} = a_\{ij\}(x_\{1\}, \ldots , x_\{i-j+1\}) $ are given functions, $ w_\{n+1 1\} = g(x, x_\{1\}, \ldots , x_\{n\})$, is solved on $\mathbb \{R\}.$},
author = {Tryhuk, Václav},
journal = {Czechoslovak Mathematical Journal},
keywords = {ordinary differential equations; linear differential equations; transformations; functional equations; ordinary differential equations; linear differential equations; transformations; functional equations},
language = {eng},
number = {3},
pages = {509-518},
publisher = {Institute of Mathematics, Academy of Sciences of the Czech Republic},
title = {On transformations $z(t)=y(\varphi (t))$ of ordinary differential equations},
url = {http://eudml.org/doc/30579},
volume = {50},
year = {2000},
}

TY - JOUR
AU - Tryhuk, Václav
TI - On transformations $z(t)=y(\varphi (t))$ of ordinary differential equations
JO - Czechoslovak Mathematical Journal
PY - 2000
PB - Institute of Mathematics, Academy of Sciences of the Czech Republic
VL - 50
IS - 3
SP - 509
EP - 518
AB - The paper describes the general form of an ordinary differential equation of the order $n+1$$(n\ge 1)$ which allows a nontrivial global transformation consisting of the change of the independent variable. A result given by J. Aczél is generalized. A functional equation of the form \[ f\biggl (s, v, w_{11}v_{1}, \ldots , \sum _{j=1}^{n}w_{nj}v_{j}\biggr ) = \sum _{j=1}^{n}w_{n+1 j}v_{j} + w_{n+1 n+1}f(x, v, v_{1}, \ldots , v_{n}), \] where $ w_{ij} = a_{ij}(x_{1}, \ldots , x_{i-j+1}) $ are given functions, $ w_{n+1 1} = g(x, x_{1}, \ldots , x_{n})$, is solved on $\mathbb {R}.$
LA - eng
KW - ordinary differential equations; linear differential equations; transformations; functional equations; ordinary differential equations; linear differential equations; transformations; functional equations
UR - http://eudml.org/doc/30579
ER -

References

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  1. Lectures on Functional Equations and Their Applications, Academic Press, New York, 1966. (1966) MR0208210
  2. Über Zusammenhänge zwischen Differential- und Funktionalgleichungen, Jahresber. Deutsch. Math.-Verein. 71 (1969), 55–57. (1969) MR0256014
  3. Linear Differential Transformations of the Second Order, The English Univ. Press, London, 1971. (1971) MR0463539
  4. Untersuchungen Über den Zusammenhang von Differential- und Funktionalgleichungen, Publ. Math. Debrecen 13 (1966), 207–223. (1966) MR0206445
  5. Global Properties of Linear Ordinary Differential Equations, Mathematics and Its Applications (East European Series) 52, Kluwer Acad. Publ., Dordrecht-Boston-London, 1991. (1991) Zbl0784.34009MR1192133
  6. 10.1016/0022-0396(79)90011-1, J. Differential Equations 34 (1979), 291–302. (1979) MR0550047DOI10.1016/0022-0396(79)90011-1
  7. 10.1023/A:1022414717364, Czechoslovak Math. J. 50 (125) (2000), 265–278. (2000) MR1761386DOI10.1023/A:1022414717364

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