Journals / Turkish Journal of Mathematics / 2014 / Cilt: 38 - Sayı: 3

Horizontally submersions of contact CR-submanifolds

Pages
436–453
Publication Date
2014-05-16
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

We finally prove that, under a certain condition, the contact CR-submanifold of a quasi Kenmotsu manifold is locally a product of a totally geodesic leaf of an integrable horizontal distribution and a curve tangent to the normal distribution.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this paper, we discuss some geometric properties of almost contact metric submersions involving symplectic manifolds.
📊
Key Findings & Data:We show that the structures of quasi-K-cosymplectic and quasi-Kenmotsu manifolds are related to (1, 2)-symplectic structures.
💡
Conclusion & Impact:We finally prove that, under a certain condition, the contact CR-submanifold of a quasi Kenmotsu manifold is locally a product of a totally geodesic leaf of an integrable horizontal distribution and a curve tangent to the normal distribution.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:CR-submanifold · almost Hermitian manifold · almost contact metric submersion

Abstract

In this paper, we discuss some geometric properties of almost contact metric submersions involving symplectic manifolds. We show that the structures of quasi-K-cosymplectic and quasi-Kenmotsu manifolds are related to (1, 2)-symplectic structures. For horizontally submersions of contact CR-submanifolds of quasi-K-cosymplectic and quasi-Kenmotsu manifolds, we study the principal characteristics and prove that their total spaces are CR-product. Curvature properties between curvatures of quasi-K-cosymplectic and quasi-Kenmotsu manifolds and the base spaces of such submersions are also established. We finally prove that, under a certain condition, the contact CR-submanifold of a quasi Kenmotsu manifold is locally a product of a totally geodesic leaf of an integrable horizontal distribution and a curve tangent to the normal distribution.

Özet

In this paper, we discuss some geometric properties of almost contact metric submersions involving symplectic manifolds. We show that the structures of quasi-K-cosymplectic and quasi-Kenmotsu manifolds are related to (1, 2)-symplectic structures. For horizontally submersions of contact CR-submanifolds of quasi-K-cosymplectic and quasi-Kenmotsu manifolds, we study the principal characteristics and prove that their total spaces are CR-product. Curvature properties between curvatures of quasi-K-cosymplectic and quasi-Kenmotsu manifolds and the base spaces of such submersions are also established. We finally prove that, under a certain condition, the contact CR-submanifold of a quasi Kenmotsu manifold is locally a product of a totally geodesic leaf of an integrable horizontal distribution and a curve tangent to the normal distribution.

🔖

Cite This Article

MASSAMBA, F., TSHIKUNA-MATAMBA, T. (2014). Horizontally submersions of contact CR-submanifolds. Turkish Journal of Mathematics, Cilt: 38 - Sayı: 3, 436–453. https://ajindex.com/articles/185706

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (8)

  1. Bejancu A. CR -submanifolds of a Kaehler manifold. I. Proc Amer Math Soc 1978; 69: 135–142.
  2. Bejancu A, Papaghiuc N. Semi-invariant submanifolds of a Sasakian manifold. An S ¸tint¸ Univ Al I Cuza Ia¸si Mat (NS) 1981; 27: 163–170.
  3. Bejancu A., Papaghiuc N. Semi-invariant submanifolds of a Sasakian space form. Colloq Math 1984; 48: 77–88. Blair DE. Riemannian Geometry of Contact and Symplectic Manifolds. Progress in Mathematics. New York, NY, USA: Birkh¨ auser, 2002. Burel JM. Almost contact structures and harmonic maps with minimal fibres. Houston J Math 2004; 30: 393–411. Chen BY. CR -submanifolds of a Kaehler manifold I, II. J Differ Geom 1981; 16: 305–322, 493–509. Chinea D. Quasi- K -cosymplectic submersions. Rend Circ Mat Palermo 1984; 33: 319–330. Chinea D. Almost contact metric submersions. Rend Circ Mat Palermo 1985; 34: 89–104. Chinea D. Harmonicity on maps between almost contact metric manifolds. Acta Math Hungar 2010; 126: 352–365.
  4. Chinea D, Gonzalez C. A classification of almost contact metric manifolds. Ann Mat Pura Appl 1990; 156: 15–36.
  5. Deshmukh S, Ghazal T, Hashem H. Submersions of CR -submanifolds on an almost Hermitian manifold. Yokohama Math J 1992; 40: 45–57.
  6. Dragomir S, Ornea L. Locally Conformal Kaehler Geometry. Progress in Mathematics. Boston, MA, USA: Birkh¨ auser, 1998.
  7. Gray A, Hervella LM. The sixteen classes of almost Hermitian manifolds and their linear invariants. Ann Mat Pura Appl 1980; 123: 35–58. O’Neill O. The fundamental equations of a submersion. Michigan Math J 1966; 13: 459–469. Papaghiuc N. Submersions of semi-invariant submanifolds of a Sasakian manifold. An Stint Univ Al I Cuza Iasi Sect I-a Mat 1989; 35: 281–288. Sahin B. Horizontally conformal submersions of CR -submanifolds. Kodai Math J 2008; 31: 46–53. Watson B. The differential geometry of two types of almost contact metric submersions. In: Rassias GM, editor. The. Mathematical Heritage of C. F. Gauss. Singapore: World Scientific Publishing, 1991, pp. 827–861.
  8. Yano K., Kon M. Structures on Manifolds. Series in Pure Mathematics. Singapore: World Scientific Publishing, 19