"Source: Text/Commut/RngDiff.text";
"Line: 119";
"Date: Wed Sep 19 23:00:01 2018";
"Main: Thu May 25 10:02:38 2023";
// original file: Text/Commut/RngDiff.text, line: 119
// Example: H118E1 ()
print "Example: H118E1";
ei := GetEchoInput();
SetEchoInput(true);
P := PolynomialRing(Rationals());
f := map<P->P | a:->5*Derivative(a)>;
R := DifferentialRing(P, f, Rationals());
R;
SetEchoInput(ei);
