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get a ring variable by name -- get a ring variable by name

Usage:

"x"_R
Inputs:
- R
- "x", a string
Outputs:
- a ring element, the variable of R whose name is x

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 several ways of now referring to x in the ring R.

i5 : R_0

o5 = x

o5 : R

i6 : "x"_R

o6 = x

o6 : R

i7 : use R;

i8 : x

o8 = x

o8 : R

See also

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

Menu

Symbol _ Ring -- get a ring variable by name
IndexedVariable _ Ring -- get a ring variable by name

The source of this document is in Macaulay2Doc/operators/underscore.m2:191:0.