From symplectic and contact geometry to dynamical systems
Hassan AIT HADDOU
Broschiertes Buch

From symplectic and contact geometry to dynamical systems

The Lichnerowicz cohomology as an intersting generalisation of De Rham usual cohomology

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In this work, we study the Lichnerowicz cohomology of a differentiable manifold M. It is the cohomology of the differential forms on M with the differential of de Rham d deformed by a closed 1-form w, namely, d is replaced by dw = d + w^. This cohomology is very different from the de Rham cohomology when w is not exact. The importance of Lichnerowicz cohomology comes from the fact that it is a tool adapted to the study of the locally conformal symplectic manifolds. It also intervenes in the study of Riemannian flows. We give a complete proof of Kunneth formula and we use this formula to find n...