Results 51 to 60 of about 10,722 (208)

Screen Transversal Cauchy Riemann Lightlike Submanifolds

open access: yes, 2020
We introduce a new class of lightlike submanifolds, namely, Screen Transversal Cauchy Riemann (STCR)-lightlike submanifolds, of indefinite Kahler manifolds.
Dogan, Burcin   +2 more
core   +1 more source

Generic Submanifolds of Almost Contact Metric Manifolds

open access: yes, 2022
Ronsse introduced the notion of generic and skew CR-submanifolds of almost Hermitian manifolds in order to unify and generalize the notions of holomorphic, totally real, CR, slant, semi-slant and pseudo-slant submanifolds. Other authors, such as Tripathi,
Livia Bejan, Cornelia   +3 more
core   +1 more source

Deformations of Cayley submanifolds [PDF]

open access: yes, 2016
Cayley submanifolds of R^8 were introduced by Harvey and Lawson as an instance of calibrated submanifolds, extending the volume-minimising properties of complex submanifolds in Kähler manifolds.

core   +2 more sources

Pointwise quasi hemi-slant submanifolds

open access: yes, 2023
The objective of this paper is to introduce a new class of submanifolds which are called pointwise quasi hemi-slant submanifolds in almost Hermitian manifolds which extends quasi hemi-slant, hemi-slant, semi-slant and slant submanifolds in a very natural
Beyendi, Selahattin   +2 more
core   +1 more source

On spherical submanifolds with nullity [PDF]

open access: yesProceedings of the American Mathematical Society, 1985
We derive a new condition for spherical submanifolds with positive relative nullity. As an application we obtain that the Ricci curvature is bounded from above by the curvature of the ambient space.
Dajczer, Marcos, Gromoll, Detlef
openaire   +1 more source

On the normality of an almost contact $3$-structure on $QR$-submanifolds [PDF]

open access: yes, 1971
summary:We study $n$-dimensional $QR$-submanifolds of $QR$-dimension $(p-1)$ immersed in a quaternionic space form $QP^{(n+p)/4}(c)$, $c\geqq 0$, and, in particular, determine such submanifolds with the induced normal almost contact $3 ...
Funabashi, S.   +3 more
core   +1 more source

GENERIC QR-SUBMANIFOLDS OF QUATERNION KAEHLER MANIFOLDS

open access: yes, 2021
In this paper, generic QR-submanifolds of a quaternion Kaehler manifold are introduced as a generalization of QR-submanifolds and real hypersurfaces of a quaternion Kaehler manifold.
Sahin, B., Yilmaz, A., Poyraz, D.
core  

Submanifolds with curvature normals of constant length and the Gauss map [PDF]

open access: yes, 2004
We show that a submanifold with curvature normal of constant length has constant principal curvatures under suitable global hypothesis.
A. J. Di Scala   +3 more
core   +1 more source

HOLONOMY AND SUBMANIFOLD GEOMETRY

open access: yes, 2002
The article is a survey of applications of holonomy techniques to the study of submanifold geometry of spaces of constant curvature. The central tool is the normal holonomy theorem, proved by \textit{C. Olmos} in [Proc. Am. Math. Soc. 110, No. 3, 813--818 (1990; Zbl 0708.53023)].
DI SCALA, ANTONIO JOSE'   +2 more
openaire   +4 more sources

Willmore Submanifolds in a sphere [PDF]

open access: yesMathematical Research Letters, 2002
Let $x:M\to S^{n+p}$ be an $n$-dimensional submanifold in an $(n+p)$-dimensional unit sphere $S^{n+p}$, $x:M\to S^{n+p}$ is called a Willmore submanifold to the following Willmore functional: $$ \int_M(S-nH^2)^{\frac{n}{2}}dv, $$ where $S=\sum\limits_{α,i,j}(h^α_{ij})^2$ is the square of the length of the second fundamental form, $H$ is the mean ...
openaire   +3 more sources

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