# Scalar differential invariants of symplectic Monge-Ampère equations

Open Mathematics (2011)

• Volume: 9, Issue: 4, page 731-751
• ISSN: 2391-5455

top

## Abstract

top
All second order scalar differential invariants of symplectic hyperbolic and elliptic Monge-Ampère equations with respect to symplectomorphisms are explicitly computed. In particular, it is shown that the number of independent second order invariants is equal to 7, in sharp contrast with general Monge-Ampère equations for which this number is equal to 2. We also introduce a series of invariant differential forms and vector fields which allow us to construct numerous scalar differential invariants of higher order. The introduced invariants give a solution of the symplectic equivalence of Monge-Ampère equations. As an example we study equations of the form u xy + f(x, y, u x, u y) = 0 and in particular find a simple linearization criterion.

## How to cite

top

Alessandro Paris, and Alexandre Vinogradov. "Scalar differential invariants of symplectic Monge-Ampère equations." Open Mathematics 9.4 (2011): 731-751. <http://eudml.org/doc/269253>.

@article{AlessandroParis2011,
abstract = {All second order scalar differential invariants of symplectic hyperbolic and elliptic Monge-Ampère equations with respect to symplectomorphisms are explicitly computed. In particular, it is shown that the number of independent second order invariants is equal to 7, in sharp contrast with general Monge-Ampère equations for which this number is equal to 2. We also introduce a series of invariant differential forms and vector fields which allow us to construct numerous scalar differential invariants of higher order. The introduced invariants give a solution of the symplectic equivalence of Monge-Ampère equations. As an example we study equations of the form u xy + f(x, y, u x, u y) = 0 and in particular find a simple linearization criterion.},
author = {Alessandro Paris, Alexandre Vinogradov},
journal = {Open Mathematics},
keywords = {Monge-Ampère equation; Scalar differential invariant; Symplectic manifold; Tangent distribution; scalar differential invariant; symplectic manifold; tangent distribution; equivalence problem; elliptic; symplectic hyperbolic},
language = {eng},
number = {4},
pages = {731-751},
title = {Scalar differential invariants of symplectic Monge-Ampère equations},
url = {http://eudml.org/doc/269253},
volume = {9},
year = {2011},
}

TY - JOUR
AU - Alessandro Paris
TI - Scalar differential invariants of symplectic Monge-Ampère equations
JO - Open Mathematics
PY - 2011
VL - 9
IS - 4
SP - 731
EP - 751
AB - All second order scalar differential invariants of symplectic hyperbolic and elliptic Monge-Ampère equations with respect to symplectomorphisms are explicitly computed. In particular, it is shown that the number of independent second order invariants is equal to 7, in sharp contrast with general Monge-Ampère equations for which this number is equal to 2. We also introduce a series of invariant differential forms and vector fields which allow us to construct numerous scalar differential invariants of higher order. The introduced invariants give a solution of the symplectic equivalence of Monge-Ampère equations. As an example we study equations of the form u xy + f(x, y, u x, u y) = 0 and in particular find a simple linearization criterion.
LA - eng
KW - Monge-Ampère equation; Scalar differential invariant; Symplectic manifold; Tangent distribution; scalar differential invariant; symplectic manifold; tangent distribution; equivalence problem; elliptic; symplectic hyperbolic
UR - http://eudml.org/doc/269253
ER -

## References

top
1. [1] Alekseevskij D.V., Vinogradov A.M., Lychagin V.V., Basic Ideas and Concepts of Differential Geometry, Encyclopaedia Math. Sci., 28, Springer, Berlin, 1991
2. [2] Bocharov A.V., Chetverikov V.N., Duzhin S.V., Khor’kova N.G., Krasil’shchik I.S., Samokhin A.V., Torkhov Yu.N., Verbovetsky A.M., Vinogradov A.M., Symmetries and Conservation Laws for Differential Equations of Mathematical Physics, Transl. Math. Monogr., 182, American Mathematical Society, Providence, 1999
3. [3] Ferraioli D.C., Vinogradov A.M., Differential invariants of generic parabolic Monge-Ampere equations, preprint available at http://arxiv.org/abs/0811.3947 Zbl1245.53017
4. [4] CoCoA Team, CoCoA: a system for doing Computations in Commutative Algebra, available at http://cocoa.dima.unige.it
5. [5] Kruglikov B., Classification of Monge-Ampère equations with two variables, In: Geometry and Topology of Caustics - CAUSTICS’98, Warsaw, Banach Center Publ., 50, Polish Academy of Sciences, Warsaw, 1999, 179–194
6. [6] Kushner A., Lychagin V., Rubtsov V., Contact Geometry and Non-Linear Differential Equations, Encyclopedia Math. Appl., 101, Cambridge University Press, Cambridge, 2007 Zbl1122.53044
7. [7] Marvan M., Vinogradov A.M., Yumaguzhin V.A., Differential invariants of generic hyperbolic Monge-Ampère equations, Cent. Eur. J. Math., 2007, 5(1), 105–133 http://dx.doi.org/10.2478/s11533-006-0043-4 Zbl1129.58015
8. [8] Vinogradov A.M., Scalar differential invariants, diffieties and characteristic classes, In: Mechanics, Analysis and Geometry: 200 years after Lagrange, North-Holland Delta Ser., North-Holland, Amsterdam, 1991, 379–414
9. [9] Vinogradov A.M., Cohomological Analysis of Partial Differential Equations and Secondary Calculus, Transl. Math. Monogr., 204, American Mathematical Society, Providence, 2001 Zbl1152.58308
10. [10] Vinogradov A.M., On the geometry of second-order parabolic equations with two independent variables, Dokl. Akad. Nauk, 2008, 423(5), 588–591

## 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.