• Rigidity of hamiltonian actions on poisson manifolds 

      Miranda Galcerán, Eva; Tien Zung, Nguyen; Monnier, Philippe (2012)
      Article
      Accés restringit per política de l'editorial
    • Rigidity of Hamiltonian actions on Poisson manifolds 

      Miranda Galcerán, Eva; Monnier, Philippe; Tien Zung, Nguyen (2011-02-01)
      Report de recerca
      Accés obert
      This paper is about the rigidity of compact group actions in the Poisson context. The main result is that Hamiltonian actions of compact semisimple type are rigid. We prove it via a Nash-Moser normal form theorem for ...
    • Singular fibres of the Gelfand-Cetlin system on u(n) 

      Bouloc, Damien; Miranda Galcerán, Eva; Tien Zung, Nguyen (Royal Society, 2018-10-28)
      Article
      Accés obert
      In this paper, we show that every singular fibre of the Gelfand–Cetlin system on co-adjoint orbits of unitary groups is a smooth isotropic submanifold which is diffeomorphic to a two-stage quotient of a compact Lie group ...