"Source: Text/Commut/RngDiff.text";
"Line: 3595";
"Date: Wed Sep 19 23:00:01 2018";
"Main: Thu May 25 10:02:38 2023";
// original file: Text/Commut/RngDiff.text, line: 3595
// Example: H118E64 ()
print "Example: H118E64";
ei := GetEchoInput();
SetEchoInput(true);
F<z> := RationalDifferentialField(Rationals());
_<X> := PolynomialRing(F);
f := X^3-z;
L := DifferentialOperator(f);
L;
M<alpha> := ext<F|f>;
R<D> := DifferentialOperatorRing(M);
Apply(R!L,alpha);
assert $1 eq 0;
SetEchoInput(ei);
