The cartesian product to which the tuple T belongs.

Number of components of the tuple T.

Return the i-th component of tuple T. Note that this indexing can also be used on the left hand side for modification of T.

>  f := < 11/2, 13/3, RootOfUnity(3, CyclotomicField(3)) >;
> print f;
<11/2, 13/3, (zeta_3)>
> print #f;
3
> print Parent(f);
Cartesian Product<Rational Field, Rational Field, Cyclotomic field Q(zeta_3)>
> print f[1]+f[2]+f[3];
(1/6) * (59 + 6*zeta_3)
> f[3] := 7;
> print f;
<11/2, 13/3, 7>