The integration of the exponential of the extended Lee homomorphism yields a homomorphism ℒ on the group of automorphisms of a locally conformal symplectic structure S, whose value on an automorphism is the similitude ratio of some lifting on a symplectic manifold canonically associated with S. On the kernel of ℒ, we construct the Calabi invariant in terms of the cA-cohomology.
|Translated title of the contribution
|Some invariants of locally conformally symplectic structures
|Number of pages
|Comptes Rendus de l'Academie des Sciences - Series I: Mathematics
|Published - Jan 1 2001
All Science Journal Classification (ASJC) codes
- General Mathematics