4.8.1.1 MPolynomialRing_base Objects

class MPolynomialRing_base
MPolynomialRing_base( base_ring, [n=x], [var=1])

Instances of class MPolynomialRing_base have the following functions (in addition to inherited functions and special functions):

base_ring,$  $ characteristic,$  $ gen,$  $ ngens,$  $ variable,$  $ variable_names

Further documentation:

characteristic( )

Return the characteristic of this polynomial ring.

sage: R = PolynomialRing(RationalField(),3)
sage: R.characteristic()
0
sage: R = PolynomialRing(GF(7),20)
sage: R.characteristic()
7

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