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Special Warped-Like Product Manifolds with (Weak) G 2 Holonomy

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Ukrainian Mathematical Journal Aims and scope

By using the fiber-base decompositions of manifolds, the definition of warped-like product is regarded as a generalization of multiply warped product manifolds, by allowing the fiber metric to be not block diagonal. We consider the (3 + 3 + 1) decomposition of 7-dimensional warped-like product manifolds, which is called a special warped-like product of the form M = F × B; where the base B is a onedimensional Riemannian manifold and the fiber F has the form F = F 1 × F 2 where F i ; i = 1, 2, are Riemannian 3-manifolds. If all fibers are complete, connected, and simply connected, then they are isometric to S 3 with constant curvature k > 0 in the class of special warped-like product metrics admitting the (weak) G 2 holonomy determined by the fundamental 3-form.

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Published in Ukrains’kyi Matematychnyi Zhurnal, Vol. 65, No. 8, pp. 1126–1140, August, 2013.

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Uğuz, S. Special Warped-Like Product Manifolds with (Weak) G 2 Holonomy. Ukr Math J 65, 1257–1272 (2014). https://doi.org/10.1007/s11253-014-0856-4

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  • DOI: https://doi.org/10.1007/s11253-014-0856-4

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