Results 121 to 130 of about 276,630 (212)

On conharmonic curvature tensor of six-dimensional Kählerian submanifolds of Cayley algebra

Дифференциальная геометрия многообразий фигур
Conharmonic transformations are conformal transformations that preserve the property of harmonicity of smooth functions. This type of transformation was introduced into consideration in the 50s of the last century by the Japanese mathematician Y.
G. A. Banaru
doaj   +1 more source

A unified dynamical systems framework for cosmology in f(Q) gravity: generic features across the connection branches

European Physical Journal C: Particles and Fields
We develop a unified dynamical systems framework for spatially flat FLRW cosmology in f(Q) gravity, covering all three connection branches using a single set of Hubble-normalised variables without fixing the function f(Q) a priori. This model-independent
Jibitesh Dutta, Wompherdeiki Khyllep, Saikat Chakraborty, Daniele Gregoris, Khamphee Karwan   +4 more
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Gradient Expanding Ricci Solitons Type Inequalities on Submanifolds in Quaternion Kaehler Manifolds with Bi-Slant Factor

Mathematics
In this article, we study the Ricci soliton on quaternion bi-slant submanifolds of quaternion Kaehler manifolds. We obtain a lower-bound-type inequality in terms of expanding gradient Ricci solitons with a gradient-type vector field for the quaternion bi-
Ali H. Hakami, Mohd Danish Siddiqi
doaj   +1 more source

Nonlinear stability of extremal Reissner–Nordström black holes in spherical symmetry

Forum of Mathematics, Pi
In this paper, we prove the codimension-one nonlinear asymptotic stability of the extremal Reissner–Nordström family of black holes in the spherically symmetric Einstein–Maxwell-neutral scalar field model, up to and including the event horizon.
Yannis Angelopoulos, Christoph Kehle, Ryan Unger   +2 more
doaj   +1 more source

Application of hierarchical self-organizing mapping to invariant recognition of color-texture images [PDF]

, 2002
In this paper, we present a hierarchical self-organizing map applying to scaling and rotation invariant recognition of a 256×256-pixel color-texture image.
Wong, K.W., Lursinsap, C., Sookhanaphibarn, K.   +2 more
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A Comprehensive Review of Golden Riemannian Manifolds

Axioms
In differential geometry, the concept of golden structure represents a compelling area with wide-ranging applications. The exploration of golden Riemannian manifolds was initiated by C. E. Hretcanu and M.
Bang-Yen Chen, Majid Ali Choudhary, Afshan Perween   +2 more
doaj   +1 more source

Invariant and Anti-Invariant Submanifolds of Generalized Sasakian Space Forms

Lobachevskii Journal of Mathematics
In this article, invariant and anti-invariant submanifolds of generalized Sasakian space forms are investigated. The important properties of such submanifolds are determined according to both Levi-Civita connection and semisymmetric metric connection.
Mert, T., Pandey, S., Atçeken, M., De, U.C.   +3 more
openaire   +2 more sources

Tensor-invariants of submanifolds [PDF]

Czechoslovak Mathematical Journal, 1971
openaire   +2 more sources

A note on invariant submanifolds of CR-integrable almost Kenmotsu manifolds

, 2017
The present paper deals with invariant submanifolds of CR-integrable almost Kenmotsu manifolds. Among others it is proved that every invariant submanifold of a CR-integrable (k,?)'-almost Kenmotsu manifold with k < -1 is totally geodesic ...
Young Suh, Uday De, Krishanu Mandal
core   +1 more source

Invariant Variational Problems and Invariant Flows via Moving Frames

, 2007
This paper reviews the moving frame approach to the construction of the invariant variational bicomplex. Applications include explicit formulae for the Euler-Lagrange equations of an invariant variational problem, and for the equations governing the ...

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