mutableMatrix(Ring,ZZ,ZZ) -- make a mutable matrix filled with zeroes

Synopsis

• Function: mutableMatrix

• Usage:

  mutableMatrix(R,nrows,ncols)

• Inputs:
  • R, a ring
  • nrows, an integer
  • ncols, an integer
• Optional inputs:
  • Dense => ..., default value true, whether the encoding of the matrix should be dense or not: see MutableMatrix
• Outputs:
  • a mutable matrix, an nrows by ncols mutable matrix filled with zeroes from the ring R

Description

i1 : m = mutableMatrix(QQ,10,20)

o1 = 0

o1 : MutableMatrix

i2 : m_(5,5) = 11/13

     11
o2 = --
     13

o2 : QQ

i3 : m

o3 = | 0 0 0 0 0 0     0 0 0 0 0 0 0 0 0 0 0 0 0 0 |
     | 0 0 0 0 0 0     0 0 0 0 0 0 0 0 0 0 0 0 0 0 |
     | 0 0 0 0 0 0     0 0 0 0 0 0 0 0 0 0 0 0 0 0 |
     | 0 0 0 0 0 0     0 0 0 0 0 0 0 0 0 0 0 0 0 0 |
     | 0 0 0 0 0 0     0 0 0 0 0 0 0 0 0 0 0 0 0 0 |
     | 0 0 0 0 0 11/13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 |
     | 0 0 0 0 0 0     0 0 0 0 0 0 0 0 0 0 0 0 0 0 |
     | 0 0 0 0 0 0     0 0 0 0 0 0 0 0 0 0 0 0 0 0 |
     | 0 0 0 0 0 0     0 0 0 0 0 0 0 0 0 0 0 0 0 0 |
     | 0 0 0 0 0 0     0 0 0 0 0 0 0 0 0 0 0 0 0 0 |

o3 : MutableMatrix

See also

• mutableIdentity -- make a mutable identity matrix
• mutableMatrix -- make a mutable matrix