"Source: Text/Commut/RngDiff.text";
"Line: 3974";
"Date: Thu Sep 25 14:47:46 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Commut/RngDiff.text, line: 3974
// Example: H121E71 ()
print "Example: H121E71";
ei := GetEchoInput();
SetEchoInput(true);
S<t>:=DifferentialLaurentSeriesRing(Rationals():Precision:=15);
R<D>:=DifferentialOperatorRing(S);
L:=(D^5+t^(-1))*D;
np:=NewtonPolygon(L);
Slopes(np);
factsL,blsL:=Factorisation(L:Algorithm:="LCLM");
blsL;
[v[2]:v in factsL];
[v[1]*v[2]:v in factsL];
factsL:=Factorisation(L:Algorithm:="LCLM",Precision:=75);
[v[1]*v[2]:v in factsL];
SetEchoInput(ei);
