chooseRandomSubmatrix -- returns coordinates for a random submatrix

Synopsis

• Usage:

  chooseRandomSubmatrix(n1, M1)

• Inputs:
  • n1, an integer
  • M1, a matrix
• Outputs:
  • a list

Description

i1 : R = QQ[x,y,z];

i2 : M=matrix{{x^2,x^3,x^4},{y^4,y^2,y^3},{z^3,z^4,z^2}};

             3       3
o2 : Matrix R  <--- R

i3 : chooseRandomSubmatrix(2, M)

o3 = {{1, 2}, {2, 1}}

o3 : List