Sums of commutators in ideals and modules of type II factors
arXiv:math/0304319
Abstract
Let M be a factor of type II_\infty or II_1 having separable predual and let M-bar be the algebra of affiliated τ-measureable operators. We characterize the commutator space [I,J] for sub-(M,M)-bimodules I and J of M-bar.
33 pages