Intersection theory and the Alesker product Joseph Fu Indiana University Mathematics Journal 2016 text pdf 10.1512/iumj.2016.65.5846 10.1512/iumj.2016.65.5846 en Indiana Univ. Math. J. 65 (2016) 1347 - 1371 state-of-the-art mathematics http://iumj.org/access/