I want to study GR from a mathematical point of view but I know almost no physics. Is this possible? And what textbook would be more geared towards this? Also, what are the math prerequisites that I need? I have studied up to analysis on manifolds, some linear algebra and multi-linear algebra, topology, and a tiny bit of ODE's. I don't think that this is enough, so what else should I pick up before I start studying GR?