23 citations · 30 across the 2 of their papers we have counts for
2 papers
math.DG2007★ 7 cited
Quelques plats pour la métrique de Hofer
Pierre Py
We show, by an elementary and explicit construction, that the group of Hamiltonian diffeomorphisms of certain symplectic manifolds, endowed with Hofer's metric, contains subgroups…
math.SG2005★ 23 cited
Quasi-morphismes et invariant de Calabi
Pierre Py
In this paper, we give two elementary constructions of homogeneous quasi-morphisms defined on the group of Hamiltonian diffeomorphisms of certain closed connected symplectic manifo…