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| ### Function NumberOfRows ( elt-alg^mat/res^pow M ) -> elt-ord^rat n ### Description Returns the number of rows of M. ### Examples x_PA:= PolynomialAlgebra(FiniteField(5));; x_f:= Coerce(x_PA,X^2+2);; x_PSR:= PowerSeriesRing(FiniteField(5),x_f);; x_Quo:= Quotient(x_PSR,20);; a:=Element(x_Quo,[1,2,3]);; b:=Element(x_Quo,0);; c:=Element(x_Quo,[3,4]);; d:= Element(x_Quo,1);; M:= Matrix(x_Quo,3,2,[a,b,c,d,a,d]); NumberOfRows(M);
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