Thank you for the advise Alex. I read Einstein's Relativity last spring and found it most fascinating. Since the mathematics was kept to a minimum I was able to grasp the concepts fairly easily without getting hung up on the more technical aspects of the theory. More recently I found what looks to be a superb work titled Reflections of Relativity on the MathPages.com site. The mathematics therein appear to be quite involved, and no less intriguing. This is what prompted my initial question.

As a follow-up, I was wondering where the subject of topology would fit in with the topics listed above. Unless I'm mistaken, I believe differential topology and concepts relating to manifolds are also involved in General Relativity. Please let me know if this is an area you would also recommend I study. Thank you.