I want to know the answer to the following question:
What did von Neuman's method use?
All the background I'm provided with is that "Von Neumann's method used a pivoting algorithm between simplices, with the pivoting decision determined by a nonnegative least squares subproblem with a convexity constraint (projecting the zero-vector onto the convex hull of the active simplex).". Is that enough to answer the question?
Answer: yes