On 31/08/16 02:36, Ralf Stephan wrote:
On Tuesday, August 30, 2016 at 5:45:16 PM UTC+2, vdelecroix wrote:
sage: x = SR.variable(domain = GF(3))
sage: n = SR.variable(domain = ZZ)
This is good design(TM). The usage however duplicates
Sage's polynomial rings,so why burden calculus with that?
Because the symbolic expression "x^n" is *not* a polynomial! Moreover,
with finite fields, polynomial function is different from polynomial.
Namely, x^3 = x for any x in GF(3) but these are not equal as polynomials.
Vincent
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