Espaces de Krein et index des systèmes hamiltoniens
Displaying 221 – 240 of 912
Estimates for the energy of a symplectic map.
H. Hofer (1993)
Commentarii mathematici Helvetici
Estimation de l'entropie des systèmes lagrangiens sans points conjugués
P. Foulon (1992)
Annales de l'I.H.P. Physique théorique
Exemples de hamiltoniens non intégrables en mécanique analytique réelle
Michèle Audin (2003)
Annales de la Faculté des sciences de Toulouse : Mathématiques
Existence et non existence de tores invariants par des difféomorphismes symplectiques
Michael R. Herman (1987/1988)
Séminaire Équations aux dérivées partielles (Polytechnique)
Existence of conservation laws in nilpotent case.
Mehdi, M. (1999)
Acta Mathematica Universitatis Comenianae. New Series
Existence of four solutions of some nonlinear Hamiltonian system.
Jung, Tacksun, Choi, Q-Heung (2008)
Boundary Value Problems [electronic only]
Existence of homoclinic orbits for Hamiltonian systems with superquadratic potentials.
Ding, Jian, Xu, Junxiang, Zhang, Fubao (2009)
Abstract and Applied Analysis
Existence of infinitely many homoclinic orbits in hamiltonian systems.
Eric Séré (1992)
Mathematische Zeitschrift
Existence of periodic solutions of linear Hamiltonian systems with sublinear perturbation.
Han, Zhiqing (2010)
Boundary Value Problems [electronic only]
Existence of solutions and of multiple solutions for nonlinear nonsmooth periodic systems
Evgenia H. Papageorgiou, Nikolaos S. Papageorgiou (2004)
Czechoslovak Mathematical Journal
In this paper we examine nonlinear periodic systems driven by the vectorial -Laplacian and with a nondifferentiable, locally Lipschitz nonlinearity. Our approach is based on the nonsmooth critical point theory and uses the subdifferential theory for locally Lipschitz functions. We prove existence and multiplicity results for the “sublinear” problem. For the semilinear problem (i.e. ) using a nonsmooth multidimensional version of the Ambrosetti-Rabinowitz condition, we prove an existence theorem...
Existence of solutions for a nonlinear algebraic system.
Zhang, Guang, Bai, Liang (2009)
Discrete Dynamics in Nature and Society
Existence of solutions for a nonlinear discrete system involving the -Laplacian
Xingyong Zhang, Xianhua Tang (2012)
Applications of Mathematics
The existence of solutions for boundary value problems for a nonlinear discrete system involving the -Laplacian is investigated. The approach is based on critical point theory.
Existence of solutions to a Hamiltonian system without convexity condition on the nonlinearity.
Spradlin, Gregory S. (2004)
Electronic Journal of Differential Equations (EJDE) [electronic only]
Existence of star-products on exact symplectic manifolds
Marc De Wilde, P. B. A. Lecomte (1985)
Annales de l'institut Fourier
It is shown that if a manifold admits an exact symplectic form, then its Poisson Lie algebra has non trivial formal deformations and the manifold admits star-products. The non-formal derivations of the star-products and the deformations of the Poisson Lie algebra of an arbitrary symplectic manifold are studied.
Explicit Solutions of Classical Generalized Toda Models.
M.A. Olshanetsky, A.M. Perelomov (1979)
Inventiones mathematicae
Exploding orbits of holomorphic structures.
John Erik Fornaess, Sandrine Grellier (1996)
Mathematische Zeitschrift
Extensions of symplectic groupoids and quantization.
Alan Weinstein, Ping Xu (1991)
Journal für die reine und angewandte Mathematik
Failure of convergence of the Lax-Oleinik semi-group in the time periodic case
Albert Fathi, John Mather (2000)
Bulletin de la Société Mathématique de France
Families of whiskered tori for a-priori stable/unstable Hamiltonian systems and construction of unstable orbits.
Valdinoci, Enrico (2000)
Mathematical Physics Electronic Journal [electronic only]