Results 41 to 50 of about 252 (77)

Geometric and Structural Properties of Indefinite Kenmotsu Manifolds Admitting Eta-Ricci–Bourguignon Solitons

Mathematics
This paper undertakes a detailed study of η-Ricci–Bourguignon solitons on ϵ-Kenmotsu manifolds, with particular focus on three special types of Ricci tensors: Codazzi-type, cyclic parallel and cyclic η-recurrent tensors that support such solitonic ...
Md Aquib, Oğuzhan Bahadır, Laltluangkima Chawngthu, Rajesh Kumar   +3 more
doaj   +1 more source

On the Invariant Theory of Weingarten Surfaces in Euclidean Space

, 2008
We prove that any strongly regular Weingarten surface in Euclidean space carries locally geometric principal parameters. The basic theorem states that any strongly regular Weingarten surface is determined up to a motion by its structural functions and ...
Baran H, Baran H Marvan M, Bonnet O, Bonnet O, Bryant R, Eisenhart L, Enneper A, Enneper A, Enneper A, Finkel F, Georgi Ganchev, Gray A, Kenmotsu K, Kruppa E, Serret J, Sturm C, Sturm C, Sturm C, Vesselka Mihova, von Lilienthal R   +19 more
core   +2 more sources

On the uniqueness of a shear-vorticity-acceleration-free velocity field in space-times [PDF]

, 2019
We prove that in space-times a velocity field that is shear, vorticity and acceleration-free, if any, is unique up to reflection, with these exceptions: generalized Robertson-Walker space-times whose space sub-manifold is warped, and twisted space-times (
Mantica, Carlo Alberto, Molinari, Luca Guido, Tacchini, Adriano   +2 more
core   +2 more sources

The Z‐Tensor on Almost Co‐Kählerian Manifolds Admitting Riemann Soliton Structure

Advances in Mathematical Physics, Volume 2024, Issue 1, 2024.
A Riemann soliton (RS) is a natural generalization of a Ricci soliton structure on pseudo‐Riemannian manifolds. This work aims at investigating almost co‐Kählerian manifolds (ACKM) 2n+1 whose metrics are Riemann solitons utilizing the properties of the Z‐tensor.
Sunil Kumar Yadav, Sameh Shenawy, Nasser Bin Turki, Rajendra Prasad, Mohammad Mirzazadeh   +4 more
wiley   +1 more source

The geometric Cauchy problem for developable submanifolds

, 2019
Given a smooth distribution $\mathscr{D}$ of $m$-dimensional planes along a smooth regular curve $\gamma$ in $\mathbb{R}^{m+n}$, we consider the following problem: To find an $m$-dimensional developable submanifold of $\mathbb{R}^{m+n}$, that is, a ruled
Raffaelli, Matteo
core   +1 more source

On tensor fields semiconjugated with torse-forming vector fields [PDF]

, 2005
summary:The paper deals with tensor fields which are semiconjugated with torse-forming vector fields.
Mikeš, Josef, Rachůnek, Lukáš
core  

On Decomposable Almost Pseudo Conharmonically Symmetric Manifolds [PDF]

, 2012
summary:The object of the present paper is to study decomposable almost pseudo conharmonically symmetric ...
Yilmaz, Hülya Bağdatlı
core   +1 more source

Natural PDE's of Linear Fractional Weingarten surfaces in Euclidean Space [PDF]

, 2012
We prove that the natural principal parameters on a given Weingarten surface are also natural principal parameters for the parallel surfaces of the given one. As a consequence of this result we obtain that the natural PDE of any Weingarten surface is the
Ganchev, Georgi, Mihova, Vesselka
core  

On pseudosymmetric manifolds

, 2015
In the literature, there are two different notions of pseudosymmetric manifolds, one by Chaki [7] and other by Deszcz [16], and there are many papers related to these notions.
Deszcz, Ryszard, Hotlos, Marin, Jelwicki, Jan, Kundu, Haradhan, Shaikh, Absos Ali   +4 more
core   +1 more source

SOME RESULTS ON YAMABE SOLITONS ON NEARLY HYPERBOLIC SASAKIAN MANIFOLDS [PDF]

We classify almost Yamabe on nearly hyperbolic Sasakian manifolds whose potential vector field is torse-forming admitting semi-symmetric metric connection and quarter symmetric non-metric connection. Certain results of such solitons on CR-submanifolds of
Siddiqi, Mohd. Danish, Suthar, D. L., Yadav, Sunil Kumar   +2 more
core   +1 more source