Hilbert-Samuel Polynomials for Hilbert Modules R. DouglasKeren Yan Indiana University Mathematics Journal 1993 text pdf 10.1512/iumj.1993.42.42036 10.1512/iumj.1993.42.42036 en Indiana Univ. Math. J. 42 (1993) 811 - 820 state-of-the-art mathematics http://iumj.org/access/