Extreme Points of Certain Operator Algebras Robert MooreT. Trent Indiana University Mathematics Journal 1987 text pdf 10.1512/iumj.1987.36.36036 10.1512/iumj.1987.36.36036 en Indiana Univ. Math. J. 36 (1987) 645 - 650 state-of-the-art mathematics http://iumj.org/access/