Multivariate Polynomials and Polynomial RingsΒΆ

Sage implements multivariate polynomial rings through several backends. The most generic implementation uses the classes sage.rings.polynomial.polydict.PolyDict and sage.rings.polynomial.polydict.ETuple to construct a dictionary with exponent tuples as keys and coefficients as values.

Additionally, specialized and optimized implementations over many specific coefficient rings are implemented via a shared library interface to SINGULAR; and polynomials in the boolean polynomial ring

\[\GF{2}[x_1,...,x_n]/ \langle x_1^2+x_1,...,x_n^2+x_n \rangle.\]

are implemented using the PolyBoRi library (cf. sage.rings.polynomial.pbori).

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