We describe a contact metric manifold whose Reeb vector field belongs to the (κ, μ)-nullity
distribution as a bi-Legendrian manifold and we study its canonical bi-Legendrian structure …

We consider a natural generalization of the metric almost contact manifolds that we call
metric f. pk-manifolds. They are Riemannian manifolds with a compatible f-structure which …

Özet Bu makalenin asıl amacı bir hemen hemen alfa kosimplektik manifoldun 𝐷-homotetik
deformasyonlarını araştırmaktır. 𝐷-homotetik deformasyon kullanılarak hemen hemen alfa …

Beniamino Cappelletti Montano INTEGRAL SUB MANIFOLDS OF r-CONTACT MANIFOLDS 1.
Introduction In the present paper we study integr Page 1 DEMONSTRATIO MATHEMATICA Vol …

To any globally framed f-manifold carrying a structure of S-manifold we associate several
indefinite S-manifolds. We determine the links between the corresponding Levi-Civita …

In this paper we extend the concept of Legendrian foliation to almost S-manifolds,
generalizing the definition both of Legendrian foliations on contact metric manifolds and of …

Konuralp Journal of Mathematics CYCLIC-PARALLEL RICCI TENSOR OF ALMOST S-MANIFOLDS
1. Introduction An extensive research about c Page 1 Konuralp Journal of Mathematics …

K-manifolds locally described by Sasaki manifolds Page 1 DOI: 10.2478/auom-2013-0058 An.
St. Univ. Ovidius Constanta Vol. 21(3),2013, 269–287 K-manifolds locally described by Sasaki …

We prove that if the f-sectional curvature at any point of a (2n+ s)-dimensional metric f-
contact manifold satisfying the (κ, µ) nullity condition with n> 1 is independent of the f-section …

In this paper, we are especially interested in almost alpha-cosymplecticmanifold whose
structure (φ, ξ, η, g) satisfies the certain nullity condition. Also, we obtain some results using …