Please don't start by saying there is no such thing as th best text or the most rigiorus text about anthing. I simply mean like we know Apostol's text fo calculus friedberg's or Hoffman's text on linear agebra Rudin's analysis text and ... what's the one about relativity? As far as I've googled I've found Relativity: Special, General, and Cosmological by Wolfgang Rindler. By the way I'm looking 4 special relativity and general relativity text or texts (it does'nt matter if both aren't covered in a singe book which by the way is the case 4 most books). Thanks in advance.