Titlebook: Complex, Contact and Symmetric Manifolds; In Honor of L. Vanhe Oldřich Kowalski,Emilio Musso,Domenico Perrone Book 2005 Birkhäuser Boston 2

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Notes on the Goldberg Conjecture in Dimension Four,where the scalar curvature is non-negative. However, the conjecture is still open in the remaining case. In this note, we shall give a brief survey on the recent progress concerning the conjecture in four-dimensional case.

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German Practice in State Energy Transition,n the words of R. Osserman, “curvature is . central concept (in differential geometry and, more in particular, in Riemannian geometry), distinguishing the geometrical core of the subject from those aspects that are analytic, algebraic or topological”. The reason for this can be seen as follows:. The

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https://doi.org/10.1007/978-3-319-16417-5h are solutions of a general version of the equations of topological-anti a topological fusion considered by Cecotti–Vafa, Dubrovin and Hertling. Then we give a simple characterization of the tangent bundles of special complex and special Kähler manifolds as particular types of tt*-bundles. We illus

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https://doi.org/10.1007/978-3-662-48708-2ently, on these manifolds there exists an almost contact structure (.) naturally induced from the ambient space. In this paper, we study a certain commutative condition on the almost contact structure and on the second fundamental form of these submanifolds.

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https://doi.org/10.1007/978-3-662-48708-2sify locally all Riemannian 3-manifolds with prescribed distinct Ricci eigenvalues, which can be given as arbitrary real analytic functions. In Section 3 we recall, for the . distinct Ricci eigenvalues, an explicit solution of the problem, but in a more compact form than it was presented in [.]. Fin

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