19.15 IsPolynomialRing

IsPolynomialRing( domain )

IsPolynomialRing returns true if the object domain is a ring record, representing a polynomial ring (see PolynomialRing), and false otherwise.

    gap> IsPolynomialRing( Integers );                  
    false
    gap> IsPolynomialRing( PolynomialRing( Integers ) );
    true
    gap> IsPolynomialRing( LaurentPolynomialRing( Integers ) );
    false 

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