He was initially disappointed to find that he had been assigned Dennis William Sciama , one of the founders of modern cosmology , as a supervisor rather than noted astronomer Fred Hoyle , and he found his training in mathematics inadequate for work in general relativity and cosmology .
He was initially disappointed to find that he had been assigned Dennis William Sciama , one of the founders of modern cosmology , as a supervisor rather than noted astronomer Fred Hoyle , [ 139 ] [ 140 ] and he found his training in mathematics inadequate for work in general relativity and cosmology .