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Published online by Cambridge University Press: 20 January 2009
Let (M, g, J) be an almost Hermitian manifold. More precisely, M is a ∞ differentiable manifold of dimension 2n, J is an almost complex structure on M, i.e. it is a tensor field of type (1, 1) such that
for any X∈(M), (
(M) is the Lie algebra of
∞ vector fields on M), and g is a Riemannian metric compatible with J, i.e.