Ring _ String -- get a ring variable by name

Synopsis

• Usage:

  R_"x"

• Operator: _
• Inputs:

  • R, a ring
  • "x", a string
• Outputs:

  • a ring element, the variable of R whose name is x

Description

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

i2 : use R;

i3 : S = ZZ[x,t];

i4 : x

o4 = x

o4 : S

i5 : R_1

o5 = y

o5 : R

i6 : R_"x"

o6 = x

o6 : R

i7 : x_R

o7 = x

o7 : R

i8 : use R;

i9 : x

o9 = x

o9 : R

See also

• Ring _ ZZ -- get a ring variable by index
• Symbol _ Ring -- get a ring variable by name
• use(Ring) -- install ring variables and ring operations