Einstein Manifolds - Arthur L. Besse - Google Books

http://books.google.de/books/about/Einstein_Manifolds.html?hl=de&id=6I_XgRJaBL0C

Einstein's equations stem from General Relativity. In the context of Riemannian manifolds, an independent mathematical theory has developed around them. Recently, it has produced several striking results, which have been of great interest also to…