Compactification of Homogeneous Spaces, II Robert Hermann Indiana University Mathematics Journal 1966 text pdf 10.1512/iumj.1966.15.15046 10.1512/iumj.1966.15.15046 en Indiana Univ. Math. J. 15 (1966) 667 - 681 state-of-the-art mathematics http://iumj.org/access/