"Source: Text/Commut/RngDiff.text";
"Line: 1373";
"Date: Wed Sep 19 23:00:01 2018";
"Main: Thu May 25 10:02:38 2023";
// original file: Text/Commut/RngDiff.text, line: 1373
// Example: H118E26 ()
print "Example: H118E26";
ei := GetEchoInput();
SetEchoInput(true);
F<z> := RationalDifferentialField(Rationals());
_<X> := PolynomialRing(F);
M<alpha> := ext< F | X^2-z >;
M;
alpha^2;
SetEchoInput(ei);
