Hansjorg Geiges is Professor of Mathematics at the University of Cologne. He has received several teaching awards, and an EMS prize for mathematical exposition. His book An Introduction to Contact Topology, published by Cambridge University Press in 2008, has become a highly cited standard reference for the field.
'The Geometry of Celestial Mechanics offers a fresh look at one of the most celebrated topics of mathematics ... I would gladly recommend this book ...' Anil Venkatesh, Mathematical Association of America Reviews 'Because much of the geometric theory, the many historical notes, and the exercises in the book are not found in other contemporary books on celestial mechanics, the book makes a great addition to the library of anyone with an interest in celestial mechanics.' Lennard Bakker, Zentralblatt MATH