We show that the Hamiltonian Lagrangian monodromy group, in its homological
version, is trivial for any weakly exact Lagrangian submanifold of a symplectic
manifold. The proof relies on a sheaf approach to Floer homology given by a relative
Seidel morphism.
Received: 4 March 2010
Revised: 30 June 2011
Accepted: 02 August 2011
Published: 26 September 2011
Proposed: Leonid Polterovich
Seconded: Yasha Eliashberg, Simon Donaldson