Results 1 to 10 of about 1,929 (114)

On Doubly Twisted Product of Complex Finsler Manifolds

open access: yesJournal of Mathematical Study, 2022
Let (M1,F1) and (M2,F2) be two strongly pseudoconvex complex Finsler manifolds. The doubly twisted product (abbreviated as DTP) complex Finsler manifold (M1×(λ1,λ2) M2,F) is the product manifold M1×M2 endowed with the twisted product complex Finsler ...
W. Xiao   +3 more
semanticscholar   +1 more source

Ruled real hypersurfaces in the complex hyperbolic quadric

open access: yesDemonstratio Mathematica, 2023
In this article, we introduce a new family of real hypersurfaces in the complex hyperbolic quadric Qn∗=SO2,no∕SO2SOn{{Q}^{n}}^{\ast }=S{O}_{2,n}^{o}/S{O}_{2}S{O}_{n}, namely, the ruled real hypersurfaces foliated by complex hypersurfaces.
Lee Hyunjin, Suh Young Jin, Woo Changhwa
doaj   +1 more source

Basic inequalities for statistical submanifolds in Golden-like statistical manifolds

open access: yesOpen Mathematics, 2022
In this paper, we introduce and study Golden-like statistical manifolds. We obtain some basic inequalities for curvature invariants of statistical submanifolds in Golden-like statistical manifolds.
Lone Mohamd Saleem   +3 more
doaj   +1 more source

Classification of f-biharmonic submanifolds in Lorentz space forms

open access: yesOpen Mathematics, 2021
In this paper, f-biharmonic submanifolds with parallel normalized mean curvature vector field in Lorentz space forms are discussed. When ff is a constant, we prove that such submanifolds have parallel mean curvature vector field with the minimal ...
Du Li
doaj   +1 more source

Estimates for eigenvalues of the Neumann and Steklov problems

open access: yesAdvances in Nonlinear Analysis, 2023
We prove Li-Yau-Kröger-type bounds for Neumann-type eigenvalues of the biharmonic operator on bounded domains in a Euclidean space. We also prove sharp estimates for lower order eigenvalues of a biharmonic Steklov problem and of the Laplacian, which ...
Du Feng   +4 more
doaj   +1 more source

On f-rectifying curves in the Euclidean 4-space

open access: yesActa Universitatis Sapientiae: Mathematica, 2021
A rectifying curve in the Euclidean 4-space 𝔼4 is defined as an arc length parametrized curve γ in 𝔼4 such that its position vector always lies in its rectifying space (i.e., the orthogonal complement Nγ ˔ of its principal normal vector field Nγ) in 𝔼4 ...
Iqbal Zafar, Sengupta Joydeep
doaj   +1 more source

Spacelike Bertrand curves in Minkowski 3-space revisited

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2023
In the geometry of curves in 𝔼3, if the principal normal vector field of a given space curve ϕ with non-zero curvatures is the principal normal vector field of another space curve ϕ*, then the curve ϕ is called a Bertrand curve and ϕ* is called Bertrand ...
Erdem Hatice Altın, İlarslan Kazım
doaj   +1 more source

A survey on Inverse mean curvature flow in ROSSes

open access: yesComplex Manifolds, 2017
In this survey we discuss the evolution by inverse mean curvature flow of star-shaped mean convex hypersurfaces in non-compact rank one symmetric spaces.
Pipoli Giuseppe
doaj   +1 more source

SLANT SUBMANIFOLDS IN SASAKIAN MANIFOLDS

open access: yesGlasgow Mathematical Journal, 2000
In this paper, we show new results on slant submanifolds of an almost contact metric manifold. We study and characterize slant submanifolds of K-contact and Sasakian manifolds. We also study the special class of three-dimensional slant submanifolds.
J. Cabrerizo   +3 more
semanticscholar   +1 more source

Polar Actions on Berger Spheres [PDF]

open access: yes, 2006
The object of this article is to study a torus action on a so-called Berger sphere. We also make some comments on polar actions on naturally reductive homogeneous spaces. Finally, we prove a rigidity-type theorem for Riemannian manifolds carrying a polar
ANTONIO J. DI SCALA   +5 more
core   +1 more source

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