KASH3 Ref - Parent

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| ### Function Parent ( elt-alg^pol/ord^pow xf ) -> alg^pol PRx ### Description The parent of xf ### Examples x_F5:= FiniteField(5);; x_F5x:= PolynomialAlgebra(x_F5);; x_f:= x_F5x.1^2+2;; x_PR:= PowerSeriesRing(x_F5,x_f);; x_PRx:= PolynomialAlgebra(x_PR); L:= [Element(x_PR,[1,2]),Element(x_PR,[3,2,4]),2];; xf:= Poly(x_PRx,L); Parent(xf);
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