Given a natural number $n$, the von Neumann (or Birkhoff) polytope is defined as the convex hull of $n \times n$ permutation matrices.
…………………………………………………………………………………………………………. यो मुलुक सिंगापुर जस्तो बनिसकेको छैन मात्र राजनीतिक परिवर्तन...