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Symbol _ Ring -- get a ring variable by name

Operator: _
Usage:

x_R
Inputs:
- x, a symbol, or a ring element
- R, a ring
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

The symbol x now refers to the variable x in the ring S. There are various ways of now referring to x in the ring R.

i5 : R_0

o5 = x

o5 : R

i6 : symbol x

o6 = x

o6 : Symbol

i7 : oo_R

o7 = x

o7 : R

i8 : use R;

i9 : x

o9 = x

o9 : R

See also

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

Ways to use this method:

Symbol _ Ring -- get a ring variable by name

The source of this document is in Macaulay2Doc/operators/underscore.m2:221:0.