Harmonic Almost (Pseudo-) Hermitian Structures

This work is to study certain geometric aspects of the theory of almost (pseudo-) Hermitian structures on four-manifolds that are harmonic sections or harmonic maps or a minimal isometric imbedding from the manifold into its twistor space. We have concentrated on three basic classes in the Gray-Hervella classification such as Kahler manifolds, Almost Kahler manifolds and Hermitian Manifolds.