Equivariant Embeddings of Kälerian Symmetric Spaces

In this article we investigate some properties of equivariant embeddings of a symmetric Kählerian manifold. Motivated by a theorem of Cartan and Wallach on equivariant embeddings of symmetric spaces we characterize these embeddings in the special case of ${\mathbb{C}\mathbb{P}}^n$. Further, we verify that if a equivariant embedding has parallel plurimean curvature then it is the extrinsically symmetric one.