Document Details Document Type : Thesis  Document Title : Geometry of tangent bundles of some almost hermition manifolds حول هندسة الانغمار لعديدات الطيات الجزئية من نوع كوشي ريمان   Subject : Mathematics  Document Language : Arabic  Abstract : The theory of Riemannian submersion goes back to four decades when B. ONeill [28] and A. Gray [21] independently, formulated the basis of such theory, which has hugely been developed in the last two decades. Nowadays several works are still in progress. In the present thesis we analyzed Riemannian submersions discussing the main properties of invariant tensors T, A and relating the Riemannian curvature of the total space, base space and the fibers . Also, we discussed the properties of invariant tensors T, A and relating the holomorphic bisectional curvature and holomorphic sectional curvature of the total space, base space and the fiber of Riemannian submersion of almost Hermitian and almost contact manifolds. Moreover, we study the Riemannian submersion of CR-submanifolds of almost Hermitian manifold. Submersion of CR-submanifold was introduced by S. Kobayashi [25] . Finally, we obtain some results on submersion of CR-submanifold of trans-Sasakian manifold  Supervisor : Dr. Mohamed Hassan Shahd  Thesis Type : Master Thesis  Publishing Year : 1427 AH 2006 AD  Added Date : Wednesday, June 11, 2008  Researchers Researcher Name (Arabic) Researcher Name (English) Researcher Type Dr Grade Email لبنى محمد الحمومي Al-hmomi, Lubna Mohamed Researcher Master   Files File Name Type Description  23706.pdf pdf المستخلص  23707.pdf pdf Abstract Back To Researches Page