"Source: Text/Commut/RngDiff.text";
"Line: 1935";
"Date: Wed Sep 19 23:00:01 2018";
"Main: Thu May 25 10:02:38 2023";
// original file: Text/Commut/RngDiff.text, line: 1935
// Example: H118E35 ()
print "Example: H118E35";
ei := GetEchoInput();
SetEchoInput(true);
F<z> := RationalDifferentialField(Rationals());
R<D> := DifferentialOperatorRing(F);
BaseRing(R) eq F;
assert $1;
Derivation(R);
Differential(R);
SetEchoInput(ei);
