Results 81 to 90 of about 652,333 (170)

The sculpture Manifold: a band from a surface, a surface from a band [PDF]

, 2008
The steel sculpture Manifold consists of an 8 cm wide closed band of stainless steel that winds around in an intricate way, curving and coming very close to itself.
Osinga, HM, Storch, Benjamin, Krauskopf, B   +2 more
core  

Pair of Associated η-Ricci–Bourguignon Almost Solitons with Vertical Torse-Forming Potential on Almost Contact Complex Riemannian Manifolds

Mathematics
Each of the studied manifolds has a pair of B-metrics, interrelated by an almost contact structure. The case where each of these metrics gives rise to an η-Ricci–Bourguignon almost soliton, where η is the contact form, is studied.
Mancho Manev
doaj   +1 more source

η-Ricci Solitons on Weak β-Kenmotsu f-Manifolds

Mathematics
Recent interest among geometers in f-structures of K. Yano is due to the study of topology and dynamics of contact foliations, which generalize the flow of the Reeb vector field on contact manifolds to higher dimensions. Weak metric structures introduced
Vladimir Rovenski
doaj   +1 more source

On complex $\eta$-einstein normal complex contact metric manifolds

, 2017
The aim of this paper is focusing on η-Einstein geometry of normal complex contact metric manifolds. We give the definition of complex η-Einstein normal complex contact metric manifolds.
Turgut Vanlı, Aysel, Ünal, İnan
core  

Continuity Equation of Transverse Kähler Metrics on Sasakian Manifolds

Mathematics
We introduce the continuity equation of transverse Kähler metrics on Sasakian manifolds and establish its interval of maximal existence. When the first basic Chern class is null (resp. negative), we prove that the solution of the (resp.
Yushuang Fan, Tao Zheng
doaj   +1 more source

Evolution paths on the equilibrium manifold [PDF]

In a pure exchange smooth economy with fixed total resources, we de- fine the length between two regular equilibria belonging to the equilibrium manifold as the number of intersection points of the evolution path connecting them with the set of critical ...
Andrea, Loi, Stefano, Matta
core  

Manifold signal processing for MIMO communications [PDF]

, 2009
textThe coding and feedback inaccuracies of the channel state information (CSI) in limited feedback multiple-input multiple-output (MIMO) wireless systems can severely impact the achievable data rate and reliability. The CSI is mathematically represented
Inoue, Takao, doctor of electrical and computer engineering
core  

Z-Solitons and Gradient Z-Solitons on α-Cosymplectic Manifolds

Axioms
In this paper, we study Z-solitons and gradient Z-solitons on α-cosymplectic manifolds. The soliton structure is defined by the generalized tensor Z=S+βg, where S denotes the Ricci tensor, g the metric tensor, and β a smooth function.
Mustafa Yildirim, Mehmet Akif Akyol, Majid Ali Choudhary, Foued Aloui   +3 more
doaj   +1 more source

Conformal Curvature Tensor on Para-kenmotsu Manifold

, 2020
The object of this paper is to obtain the characterisation of para-Kenmotsu (briefly P -Kenmotsu) manifold satisfying the conditions ( , ). ( , ). L is some function and X ∈ T( n M ).
S Sunitha Devi, K L Sai Prasad, G V S R Deekshitulu   +2 more
core  

Generalized B-Curvature Tensor in Lorentzian Para-Kenmotsu Manifold with Semi-Symmetric Metric Connection

AppliedMath
The main object of this work is to study the generalized B-curvature tensor in an n-dimensional Lorentzian para-Kenmotsu (briefly, (LPK)n) manifold along a semi-symmetric metric connection ∇¯.
Rajendra Prasad, Najwa Mohammed Al-Asmari, Abdul Haseeb, Sushmita Sen   +3 more
doaj   +1 more source