Journal of Operator Theory, Vol. 64, No. 2 (Fall 2010), pp. 265-298 (34 pages) We prove some noncommutative analogues of a theorem proved by Plotkin and Rudin about isometries between subspaces of ...
Remember the days when working a math problem resulted in a right or wrong answer, and parents had a basic grasp of how to help their children with math homework? Those days predated the Common Core ...