Map Cohomology Operations and Enumeration of Vector Bundles Lawrence Larmore Indiana University Mathematics Journal 1968 text pdf 10.1512/iumj.1968.17.17009 10.1512/iumj.1968.17.17009 en Indiana Univ. Math. J. 17 (1968) 199 - 208 state-of-the-art mathematics http://iumj.org/access/