Ring _ String -- get a ring variable by name

Synopsis

• Operator: _

• Usage:

  R_"x"

• 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_0

o5 = x

o5 : R

i6 : R_"x"

o6 = x

o6 : R

i7 : use R;

i8 : x

o8 = x

o8 : 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