Ring _ String -- get a variable by name

Ring _ String -- get a variable by name

Synopsis:

Operator: _

Input:

an instance of class Ring.

an instance of class String.

Output:

an instance of class RingElement.

R_"x" -- produce the variable of the polynomial ring R whose name is x.

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

i2 : R_"x"



o2 = x



o2 : R

Eventually we will implement this for monoids, too.

Code:

     -- ../../../Macaulay2/m2/enginering.m2:688
     Ring _ String := RingElement => (x,s) -> x#s