f|g

f|g -- yields the matrix obtained from the matrices f and g by concatenating the columns.

It is assumed that f and g both have the same target. For example,

     i1 = R = ZZ/101[a..f]
     
     o1 = R
     
     o1 : PolynomialRing

     i2 = f = matrix {{a^2, b*c, c*d}, {a-b, c-d, e-f}}
     
     o2 = | a2  bc  cd  |
          | a-b c-d e-f |
     
                  2       3
     o2 : Matrix R  <--- R

     i3 = g = genericMatrix(R, a, 2, 3)
     
     o3 = | a c e |
          | b d f |
     
                  2       3
     o3 : Matrix R  <--- R

     i4 = f | g
     
     o4 = | a2  bc  cd  a c e |
          | a-b c-d e-f b d f |
     
                  2       6
     o4 : Matrix R  <--- R

If one of the arguments is ring element or an integer, then it will be multiplied by a suitable identity matrix.

     i5 = f | 1
     
     o5 = | a2  bc  cd  1 0 |
          | a-b c-d e-f 0 1 |
     
                  2       5
     o5 : Matrix R  <--- R