Listar por autor "Pires, Ana Rita"

Mostrando ítems 1-4 de 4

    • Codimension one symplectic foliations and regular Poisson manifolds 

      Guillemin, Victor; Miranda Galcerán, Eva; Pires, Ana Rita (2010)
      Report de recerca
      Acceso abierto
      In this short note we give a complete characterization of a certain class of compact corank one Poisson manifolds, those equipped with a closed one-form defining the symplectic foliation and a closed two-form extending ...

    • Convexity for Hamiltonian torus actions on b-symplectic manifolds 

      Guillemin, Victor; Miranda Galcerán, Eva; Pires, Ana Rita; Scott, Geoffrey (2017)
      Artículo
      Acceso abierto
      n [GMPS] we proved that the moment map image of a b-symplectic toric manifold is a convex b-polytope. In this paper we obtain convexity results for the more general case of non-toric hamiltonian torus actions on b-symplectic ...

    • Convexity for Hamiltonian torus actions on b-symplectic manifolds 

      Guillemin, Victor; Miranda Galcerán, Eva; Pires, Ana Rita; Scott, Geoffrey (2014-12)
      Report de recerca
      Acceso abierto
      In [GMPS] we proved that the moment map image of a b-symplectic toric manifold is a convex b-polytope. In this paper we obtain convexity results for the more general case of non-toric hamiltonian torus actions on b-symplectic ...

    • Toric actions on b-symplectic manifolds 

      Miranda Galcerán, Eva; Pires, Ana Rita; Guillemin, Victor; Scott, Geoffrey (2013)
      Report de recerca
      Acceso abierto
      We study Hamiltonian actions on b-symplectic manifolds with a focus on the e ective case of half the dimension of the manifold. In particular, we prove a Delzant-type theorem that classi es these manifolds using polytopes ...