I thank you for making this forum as it is an immense help for trying to understand Penrose's book.

I am a bit underqualified to properly understand it and it is very helpful to be able to check up your solutions ofter spending hours trying to understand the problems in the book.

So thanks from me.

Hello,
Thank you from me as well. I have been looking for some help to the RTR for quite some time now. Disappointed for the lack of activity and support in the official website I put it aside till I found this forum.
Great idea and wonderful opportunity to exchange knowledge.
Sincerely,
Luis
Eden Prairie, Minnesota, USA