no. 5
Ordinary differential equations/Dynamical systems
A higher-dimensional Poincaré–Birkhoff theorem without monotone twist
[Un théorème de Poincaré–Birkhoff en plusieurs dimensions sans torsion monotone]

Présenté par : the Editorial Board

Fonda, Alessandro1 ; Ureña, Antonio J.2
1 Dipartimento di Matematica e Geoscienze, Università di Trieste, P.le Europa, 1, 34127 Trieste, Italy
2 Departamento de Matemática Aplicada, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
Comptes Rendus. Mathématique, Tome 354 (2016) no. 5, pp. 475-479.

Nous fournissons une preuve simple d'une version en plusieurs dimensions du théorème de Poincaré–Birkhoff qui s'applique aux applications de Poincaré des systèmes hamiltoniens. Ces applications ne sont tenues, ni d'être proches de l'identité, ni d'avoir une torsion monotone.

We provide a simple proof for a higher-dimensional version of the Poincaré–Birkhoff theorem, which applies to Poincaré time maps of Hamiltonian systems. These maps are required neither to be close to the identity nor to have a monotone twist.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crma.2016.01.023
Fonda, Alessandro 1 ; Ureña, Antonio J. 2

1 Dipartimento di Matematica e Geoscienze, Università di Trieste, P.le Europa, 1, 34127 Trieste, Italy
2 Departamento de Matemática Aplicada, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain 
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     title = {A higher-dimensional {Poincar\'e{\textendash}Birkhoff} theorem without monotone twist},
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Fonda, Alessandro; Ureña, Antonio J. A higher-dimensional Poincaré–Birkhoff theorem without monotone twist. Comptes Rendus. Mathématique, Tome 354 (2016) no. 5, pp. 475-479. doi : 10.1016/j.crma.2016.01.023. http://www.numdam.org/articles/10.1016/j.crma.2016.01.023/

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[4] Fonda, A.; Ureña, A.J. On the higher dimensional Poincaré–Birkhoff theorem for Hamiltonian flows, 2: the avoiding rays condition, 2014 www.dmi.units.it/~fonda/2014_Fonda-Urena.pdf (preprint, available online at)

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