On Anti-Commutative Algebras and Homogeneous Spaces Arthur Sagle Indiana University Mathematics Journal 1967 text pdf 10.1512/iumj.1967.16.16089 10.1512/iumj.1967.16.16089 en Indiana Univ. Math. J. 16 (1967) 1381 - 1393 state-of-the-art mathematics http://iumj.org/access/