Results 11 to 20 of about 20,711 (219)
On Pseudo-Petrov Symmetric Riemannian Manifolds [PDF]
Advances in Mathematical Physics, 2016 The present paper deals with pseudo-Petrov symmetric Riemannian manifolds whose space-matter tensor satisfies a special condition. Firstly, basic results of pseudo-Petrov symmetric Riemannian manifolds are obtained.
Sanjib Kumar Jana +3 more
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Umbilicity of (Space-Like) Submanifolds of Pseudo-Riemannian Space Forms [PDF]
Journal of Sciences, Islamic Republic of Iran, 2009 We study umbilic (space-like) submanifolds of pseudo-Riemannian space forms, then define totally semi-umbilic space-like submanifold of pseudo Euclidean space and relate this notion to umbilicity.
S.M.B. Kashani
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Pseudo-Riemannian VSI spaces II [PDF]
Classical and Quantum Gravity, 2012 19 pages.
Hervik, Sigbjørn
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Pseudo-Riemannian VSI spaces [PDF]
Classical and Quantum Gravity, 2010 14 ...
Hervik, Sigbjørn, Coley, Alan
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Geometry of Tangent Poisson–Lie Groups
Mathematics, 2023 Let G be a Poisson–Lie group equipped with a left invariant contravariant pseudo-Riemannian metric. There are many ways to lift the Poisson structure on G to the tangent bundle TG of G.
Ibrahim Al-Dayel +2 more
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Smarandache Breadth Pseudo Null Curves in Minkowski Space-time [PDF]
, 2009 A regular curve with more than 2 breadths in Minkowski 3-space is called a Smarandache Breadth Curve [8]. In this short paper, we adapt notion of Smarandache breadth curves to Pseudo null curves in Minkowski space-time and study a special case of ...
Turgut, Melih, Melih Turgut
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Journal of Function Spaces, 2020 In this paper, we show that biharmonic hypersurfaces with at most two distinct principal curvatures in pseudo-Riemannian space form Nsn+1c with constant sectional curvature c and index s have constant mean curvature.
Chao Yang, Jiancheng Liu
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An introduction to Smarandache multi-spaces and mathematical combinatorics [PDF]
, 2007 These Smarandache spaces are right theories for objectives by logic. However, the mathematical combinatorics is a combinatorial theory for branches in classical mathematics motivated by a combinatorial speculation.
Linfan Mao, Mao. Linfan
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On the Time-like Curves of Constant Breadth in Minkowski 3-Space [PDF]
, 2008 A regular curve with more than 2 breadths in Minkowski 3-space is called a Smarandache breadth curve. In this paper, one studies a special case of Smarandache breadth curves. Some characterizations of the time-like curves of constant breadth in Minkowski
Yilmaz, Suha, Turgut, Melih
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On quasi-geodesic mappings of special pseudo-Riemannian spaces
Pracì Mìžnarodnogo Geometričnogo Centru, 2022 The present paper continues the study of quasi-geodesic mappings f:(Vn, gij, Fih) → (V'n,g'ij, Fih) of pseudo-Riemannian spaces Vn, V'n with a generalized-recurrent structure Fih of parabolic type.
Irina Kurbatova, M. Pistruil
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