Abstract
We prove the formality and the evenness of odd-degree Betti numbers for compact Kahler orbifolds, by adapting the classical proofs for Kahler manifolds. As a consequence, we obtain examples of symplectic orbifolds not admitting any Kahler orbifold structure. We also review the known examples of non-formal simply connected Sasakian manifolds, and produce an example of a non-formal quasi-regular Sasakian manifold with Betti numbers b 1 = 0 and b 2 > 1.
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