Polynomial rings |
Rings of polynomials are defined from a coefficient ring.
Mmx]
use "realroot"
Here is the ring of polynomials with coefficients in 
; the first variable is 
,
the second 
:
Mmx]
R := ZZ['x,'y]
Notice that in the example above, 
and should not be
assigned to any value. If we want to use the name eg.
z of an assigned variable, we quote it:
Mmx]
z:= 3; R := ZZ['x,'y,'z]
The number of variables is unlimited. If the 
variable has no name, it is represented by
. Here is an how to access to the
corresponding polynomials in the ring R:
Mmx]
[R[0], R[1], R[2], R[100]]
Variable names can be full names:
Mmx]
QQ[xi, mu]
The set of named variables can be extended:
Mmx]
R := R[u]
The set of named variables can be redefined:
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R := ZZ[a,b]
Mmx]