39.11 NumberAlgebraElement

NumberAlgebraElement( a )

returns the number n such that the element a of the finitely presented algebra A is the n-th element of A in the sense of ElementAlgebra, that is, a = ElementAlgebra( A, n ).

    gap> a:= FreeAlgebra( GF(2), 2 );;
    gap> NumberAlgebraElement( ( a.1 + a.one )^4 );
    32769
    gap> NumberAlgebraElement( a.zero );
    0
    gap> NumberAlgebraElement( a.one );
    1 

Note that A.field must be finite.

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