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Auteur Alvaro PELAYO |
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Symplectic actions of 2-Tori on 4-manifolds / Alvaro PELAYO (cop. 2009)
Titre : Symplectic actions of 2-Tori on 4-manifolds Type de document : texte imprimé Auteurs : Alvaro PELAYO, Auteur Editeur : Providence, R. I. [Etats Unis] : American Mathematical Society Année de publication : cop. 2009 Collection : Memoirs of the American Mathematical Society, ISSN 0065-9266 num. 959 Importance : VII-81 p. ISBN/ISSN/EAN : 978-0-8218-4713-8 Langues : Anglais Catégories : 53D35 Mots-clés : variété symplectique topologie en dimension basse tore Résumé : We study singular perturbations of optimal stochastic control problems and differential games arising in the dimension reduction of system with multiple time scales. We analyze the uniform convergence of the value functions via the associated Hamilton-Jacobi-Bellman-Isaacs equations, in the framework of viscosity solutions. The crucial properties of ergodicity and stabilization to a constant that the Hamiltonian must possess are formulated as differential games with ergodic cost criteria. They are studied under various different assumptions and with PDE as well as control-theoretic methods. We construct also an explicit example where the convergence is not uniform. Finally we give some applications to the periodic homogenization of Hamilton-Jacobi equations with non-coercive Hamiltonian and of some degenerate parabolic PDEs. Note de contenu : bibliogr. Symplectic actions of 2-Tori on 4-manifolds [texte imprimé] / Alvaro PELAYO, Auteur . - Providence, R. I. (Etats Unis) : American Mathematical Society, cop. 2009 . - VII-81 p.. - (Memoirs of the American Mathematical Society, ISSN 0065-9266; 959) .
ISBN : 978-0-8218-4713-8
Langues : Anglais
Catégories : 53D35 Mots-clés : variété symplectique topologie en dimension basse tore Résumé : We study singular perturbations of optimal stochastic control problems and differential games arising in the dimension reduction of system with multiple time scales. We analyze the uniform convergence of the value functions via the associated Hamilton-Jacobi-Bellman-Isaacs equations, in the framework of viscosity solutions. The crucial properties of ergodicity and stabilization to a constant that the Hamiltonian must possess are formulated as differential games with ergodic cost criteria. They are studied under various different assumptions and with PDE as well as control-theoretic methods. We construct also an explicit example where the convergence is not uniform. Finally we give some applications to the periodic homogenization of Hamilton-Jacobi equations with non-coercive Hamiltonian and of some degenerate parabolic PDEs. Note de contenu : bibliogr. Exemplaires
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