Structures localement plates isotropes des groupes de Lie
Nguiffo B. Boyom (1993)
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Nguiffo B. Boyom (1993)
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Lionel Berard Bergery (1975)
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Didier Arnal, Mabrouk Ben Ammar, Mohamed Selmi (1991)
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In this paper, we determine a class of possible restricted holonomy groups for a non-irreducible indecomposable pseudoriemannian manifold with signature (2,2 + n). In particular, we deduce that which associated to symmetric spaces; and give some examples of such spaces. Finally, we construct some examples of metrics whose restricted holonomy groups are not closed.