matrix(Ring,RingElement) -- make a matrix from a ring element

• Function: matrix

• Usage:

  matrix(R, f)

  matrix f

• Inputs:
  • R, a ring or an instance of the type RingFamily,
  • f, a ring element or a number,
• Optional inputs:
  • Degree => ..., default value null, create a matrix from a doubly-nested list of ring elements or matrices
• Outputs:
  • a matrix, the one by one matrix with f as its single entry;

i1 : matrix 48

o1 = | 48 |

              1       1
o1 : Matrix ZZ  <-- ZZ

i2 : R = QQ[x,y]

o2 = R

o2 : PolynomialRing

i3 : matrix(x^2 - y^2)

o3 = | x2-y2 |

             1      1
o3 : Matrix R  <-- R

i4 : matrix(QQ, 48)

o4 = | 48 |

              1       1
o4 : Matrix QQ  <-- QQ

i5 : matrix(R, 48)

o5 = | 48 |

             1      1
o5 : Matrix R  <-- R