K-Theory Relative to a Semifinite Factor John Phillips Indiana University Mathematics Journal 1990 text pdf 10.1512/iumj.1990.39.39019 10.1512/iumj.1990.39.39019 en Indiana Univ. Math. J. 39 (1990) 339 - 354 state-of-the-art mathematics http://iumj.org/access/