vars(Ring) -- row matrix of the variables

Synopsis

Usage:
vars R
Function: vars
Inputs:
- R, a ring
Outputs:
- a matrix, a matrix with one row whose entries are the variables of the ring R

Description

i1 : S = QQ[w,x,y,z];

i2 : vars S

o2 = | w x y z |

             1       4
o2 : Matrix S  <--- S

i3 : ideal vars S

o3 = ideal (w, x, y, z)

o3 : Ideal of S

i4 : coker vars S

o4 = cokernel | w x y z |

                            1
o4 : S-module, quotient of S

i5 : res coker vars S

      1      4      6      4      1
o5 = S  <-- S  <-- S  <-- S  <-- S  <-- 0
                                         
     0      1      2      3      4      5

o5 : ChainComplex

i6 : R = S/(x^2-w*y, x*y-w*z, x*z-y^2);

i7 : vars R

o7 = | w x y z |

             1       4
o7 : Matrix R  <--- R

i8 : use S;

i9 : Q = S/(x^2-w*y, z);

i10 : vars S

o10 = | w x y z |

              1       4
o10 : Matrix S  <--- S