What is the status of the 4th (FOURTH) edition of the book "Modern Differential Geometry of Curves and Surfaces", by Elsa Abbena, Alfred Gray, and Simon Salamon?
For the second time recently, Amazon.com indicated its availability, only later to say that it is not available.
I recently got a notification about an item that was finally available, but turned out to be bogus. I think Amazon is just toying with us.
I would like to get this -- I gave the third edition away when it was too much work to update the code, expecting a new edition sometime 'soon'.