On the Loop Spaces of Projective Spaces T. Ganea Indiana University Mathematics Journal 1967 text pdf 10.1512/iumj.1967.16.16055 10.1512/iumj.1967.16.16055 en Indiana Univ. Math. J. 16 (1967) 853 - 858 state-of-the-art mathematics http://iumj.org/access/