Results 61 to 70 of about 1,424 (87)

On the partial parallelizable manifolds and associated invariants

Annals of the West University of Timisoara: Mathematics and Computer Science
Our idea is to use the global diffeomorphism group G (M) to study certain properties of differentiable manifolds endowed with global vector fields. We define a partial parallelizable manifold (p.p.m.) as a couple (M, ρp), where ρp is a global partial ...
Apreutesei Costache
doaj   +1 more source

On tangent bundles of Walker four-manifolds

Open Mathematics
The aim of this study is to explore the complete lifts of almost Norden structures on tangent bundles of Walker four-manifolds. Furthermore, we examine the integrability conditions of the complete lifts JC{J}^{C} of the proper almost complex structure ...
Çayir Haşim, Güler Erkan, Köseoğlu Gökhan   +2 more
doaj   +1 more source

Commuting Conditions of the k-th Cho operator with the structure Jacobi operator of real hypersurfaces in complex space forms

Open Mathematics, 2015
In this paper three dimensional real hypersurfaces in non-flat complex space forms whose k-th Cho operator with respect to the structure vector field ξ commutes with the structure Jacobi operator are classified.
Panagiotidou Konstantina, Pérez Juan de Dios   +1 more
doaj   +1 more source

The β-Flatness Condition in CR Spheres

Advanced Nonlinear Studies, 2017
This work is an adaptation of one of the methods based on the variational critical points at infinity theory of Abbas Bahri [1, 3, 2, 4, 5, 6, 7, 8] to the Cauchy–Riemann settings.
Gamara Najoua, Hafassa Boutheina
doaj   +1 more source

Curvature properties of φ-null Osserman Lorentzian S-manifolds

Open Mathematics, 2014
Brunetti Letizia, Caldarella Angelo
doaj   +1 more source

Geometric inequalities for warped product bi-slant submanifolds with a warping function. [PDF]

J Inequal Appl, 2018
Siddiqui AN, Shahid MH, Lee JW.
europepmc   +1 more source

Hopf hypersurfaces in complex two-plane Grassmannians with generalized Tanaka-Webster $$\mathfrak{D}^ \bot$$-parallel structure Jacobi operator

Open Mathematics, 2014
Pak Eunmi, Suh Young
doaj   +1 more source

User perception of a new hydrophilic-coated male urinary catheter for intermittent use. [PDF]

Nurs Open, 2019
Koeter I, Stensröd G, Hunsbedt Nilsen A, Lund R, Haslam C, De Sèze M, Sriram R, Heesakkers J, LoFric Origo study group.   +8 more
europepmc   +1 more source

The potential of corn-soybean intercropping to improve the soil health status and biomass production in cool climate boreal ecosystems. [PDF]

Sci Rep, 2019
Zaeem M, Nadeem M, Pham TH, Ashiq W, Ali W, Gilani SSM, Elavarthi S, Kavanagh V, Cheema M, Galagedara L, Thomas R.   +10 more
europepmc   +1 more source

Harmonic conformal flows on manifolds of constant curvature

Open Mathematics, 2007
Fawaz Amine
doaj   +1 more source