0000000000161056

AUTHOR

Peter W. Michor

0000-0002-5279-248x

showing 2 related works from this author

Geodesics on spaces of almost hermitian structures

1994

A natural metric on the space of all almost hermitian structures on a given manifold is investigated.

Hermitian symmetric spacePure mathematicsGeodesicGeneral MathematicsMathematical analysisSpace (mathematics)Fubini–Study metricHermitian matrixMetric (mathematics)Hermitian manifoldMathematics::Differential GeometryComplex manifoldMathematics::Symplectic GeometryMathematicsIsrael Journal of Mathematics
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The Riemannian manifold of all Riemannian metrics

1991

In this paper we study the geometry of (M, G) by using the ideas developed in [Michor, 1980]. With that differentiable structure on M it is possible to use variational principles and so we start in section 2 by computing geodesics as the curves in M minimizing the energy functional. From the geodesic equation, the covariant derivative of the Levi-Civita connection can be obtained, and that provides a direct method for computing the curvature of the manifold. Christoffel symbol and curvature turn out to be pointwise in M and so, although the mappings involved in the definition of the Ricci tensor and the scalar curvature have no trace, in our case we can define the concepts of ”Ricci like cu…

Mathematics - Differential GeometryChristoffel symbolsGeneral MathematicsPrescribed scalar curvature problem58D17 58B20Mathematical analysisCurvatureLevi-Civita connectionFunctional Analysis (math.FA)Mathematics - Functional Analysissymbols.namesakeDifferential Geometry (math.DG)symbolsFOS: MathematicsSectional curvatureMathematics::Differential GeometryExponential map (Riemannian geometry)Ricci curvatureScalar curvatureMathematics
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