Results 51 to 60 of about 436 (165)
Timelike duality, M′-theory and an exotic form of the Englert solution
Journal of High Energy Physics, 2017 Through timelike dualities, one can generate exotic versions of M-theory with different spacetime signatures. These are the M *-theory with signature (9, 2, −), the M′-theory, with signature (6, 5, +) and the theories with reversed signatures (1, 10, −),
Marc Henneaux, Arash Ranjbar
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Pseudo-Riemannian Manifolds with Totally Geodesic Bisectors [PDF]
Proceedings of the American Mathematical Society, 1975 Let M M be a pseudo-Riemannian manifold. Locally a distance function may be defined.
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Geodesic Mappings of Vn(K)-Spaces and Concircular Vector Fields
Mathematics, 2019 In the present paper, we study geodesic mappings of special pseudo-Riemannian manifolds called V n ( K ) -spaces. We prove that the set of solutions of the system of equations of geodesic mappings on V n ( K ) -spaces forms a ...
Igor G. Shandra, Josef Mikeš
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On the properties of the projective Lie algebras of rigid h-spaces H32 of the type {32}
Учёные записки Казанского университета: Серия Физико-математические науки, 2020 The five-dimensional pseudo-Riemannian spaces that admit infinitesimal projective transformations were studied. A general solution of the Eisenhart equation in the h-space H32 of non-constant curvature was found.
A.V. Aminova, D.R. Khakimov
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G-STRUCTURES DEFINED ON PSEUDO-RIEMANNIAN MANIFOLDS [PDF]
Differential Geometry, 2009 Concepts and techniques from the theory of G-structures of higher order are applied to the study of certain structures (volume forms, conformal structures, linear connections and projective structures) defined on a pseudo-Riemanniann manifold. Several relationships between the structures involved have been investigated.
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Super Quasi-Einstein Warped Products Manifolds with Respect to Affine Connections
AxiomsIn this paper, we investigate warped products on super quasi-Einstein manifolds under affine connections. We explore their fundamental properties, establish conditions for their existence, and prove that these manifolds can also be nearly quasi-Einstein ...
Mohd Vasiulla +3 more
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MathematicsAlmost contact complex Riemannian manifolds, also known as almost contact B-metric manifolds, are equipped with a pair of pseudo-Riemannian metrics that are mutually associated with each other using the tensor structure. Here, we consider a special class
Mancho Manev
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Index of pseudo-projectively-symmetric semi-Riemannian manifolds
Karpatsʹkì Matematičnì Publìkacìï, 2015 The index of $\widetilde{\nabla}$-pseudo-projectively symmetric and in particular for $\widetilde{\nabla}$-projectively symmetric semi-Riemannian manifolds, where $\widetilde{\nabla}$ is Ricci symmetric metric connection, are discussed.
P. Gupta
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Pseudo-Riemannian manifolds with simple Jacobi operators
Journal of the Mathematical Society of Japan, 2002 A (pseudo-)Riemannian manifold \((M,g)\) is called Osserman if the eigenvalues of the Jacobi operator \(R_X\) depend only on the norm of \(X\), but in no other way on the vector \(X\) at \(p\in M\). The present paper defines special Osserman manifolds by assuming additional conditions on the eigenvalues and eigenspaces of \(R_X\).
BONOME, Agustin +4 more
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Quasi-Statistical Manifolds with Almost Hermitian and Almost Anti-Hermitian Structures
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria MatematicaLet (M, g, ∇) be a 2n-dimensional quasi-statistical manifold that admits a pseudo-Riemannian metric g (or h) and a linear connection ∇ with torsion. This paper aims to study an almost Hermitian structure (g, J ) and an almost anti-Hermitian structure (h,
Aktaş Buşra, Gezer Aydin, Durmaz Olgun
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