We will generally regard the theory of almost Hermitian structures as well known and give here only definitions and a few properties that will be important for our study; many of these were already mentioned in Chapter 1. For more detail the reader is referred to Gray and Hervella  , Kobayashi-Nomizu [1963–69, Chapter IX] and Kobayashi-Wu ; also, despite its classical nature, the book of Yano  contains helpful information on many of these structures.
KeywordsComplex Manifold Symplectic Manifold Contact Structure Tensor Field Contact Manifold
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