Novel Bäcklund Transformations for Integrable Equations

In this paper, we construct a new matrix partial differential equation having a structure and properties which mirror those of a matrix fourth Painlevé equation recently derived by the current authors. In particular, we show that this matrix equation admits an auto-Bäcklund transformation analogous...

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Main Authors: Pilar Ruiz Gordoa, Andrew Pickering
Format: Article
Language:English
Published: MDPI AG 2022-09-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/10/19/3565
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author Pilar Ruiz Gordoa
Andrew Pickering
author_facet Pilar Ruiz Gordoa
Andrew Pickering
author_sort Pilar Ruiz Gordoa
collection DOAJ
description In this paper, we construct a new matrix partial differential equation having a structure and properties which mirror those of a matrix fourth Painlevé equation recently derived by the current authors. In particular, we show that this matrix equation admits an auto-Bäcklund transformation analogous to that of this matrix fourth Painlevé equation. Such auto-Bäcklund transformations, in appearance similar to those for Painlevé equations, are quite novel, having been little studied in the case of partial differential equations. Our work here shows the importance of the underlying structure of differential equations, whether ordinary or partial, in the derivation of such results. The starting point for the results in this paper is the construction of a new completely integrable equation, namely, an inverse matrix dispersive water wave equation.
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spelling doaj.art-7ace174c467c43bb977fb3bc4e80bebc2023-11-23T21:03:40ZengMDPI AGMathematics2227-73902022-09-011019356510.3390/math10193565Novel Bäcklund Transformations for Integrable EquationsPilar Ruiz Gordoa0Andrew Pickering1Área de Matemática Aplicada, ESCET Universidad Rey Juan Carlos C, Tulipán s/n, 28933 Móstoles, Madrid, SpainÁrea de Matemática Aplicada, ESCET Universidad Rey Juan Carlos C, Tulipán s/n, 28933 Móstoles, Madrid, SpainIn this paper, we construct a new matrix partial differential equation having a structure and properties which mirror those of a matrix fourth Painlevé equation recently derived by the current authors. In particular, we show that this matrix equation admits an auto-Bäcklund transformation analogous to that of this matrix fourth Painlevé equation. Such auto-Bäcklund transformations, in appearance similar to those for Painlevé equations, are quite novel, having been little studied in the case of partial differential equations. Our work here shows the importance of the underlying structure of differential equations, whether ordinary or partial, in the derivation of such results. The starting point for the results in this paper is the construction of a new completely integrable equation, namely, an inverse matrix dispersive water wave equation.https://www.mdpi.com/2227-7390/10/19/3565integrable equationsBäcklund transformationsMiura mapsinverse matrixdispersive water wave equation
spellingShingle Pilar Ruiz Gordoa
Andrew Pickering
Novel Bäcklund Transformations for Integrable Equations
Mathematics
integrable equations
Bäcklund transformations
Miura maps
inverse matrix
dispersive water wave equation
title Novel Bäcklund Transformations for Integrable Equations
title_full Novel Bäcklund Transformations for Integrable Equations
title_fullStr Novel Bäcklund Transformations for Integrable Equations
title_full_unstemmed Novel Bäcklund Transformations for Integrable Equations
title_short Novel Bäcklund Transformations for Integrable Equations
title_sort novel backlund transformations for integrable equations
topic integrable equations
Bäcklund transformations
Miura maps
inverse matrix
dispersive water wave equation
url https://www.mdpi.com/2227-7390/10/19/3565
work_keys_str_mv AT pilarruizgordoa novelbacklundtransformationsforintegrableequations
AT andrewpickering novelbacklundtransformationsforintegrableequations