"Source: Text/LieTheory/RootDtm.text";
"Line: 1291";
"Date: Fri Sep 26 12:10:11 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/LieTheory/RootDtm.text, line: 1291
// Example: H107E12 ()
print "Example: H107E12";
ei := GetEchoInput();
SetEchoInput(true);
R := RootDatum("A5" : Isogeny := 3);
F := FundamentalGroup(R);
G := IsogenyGroup(R);
H := CoisogenyGroup(R);
#G * #H eq #F;
assert $1;
R := StandardRootDatum("A", 5);
IsogenyGroup(R);
SetEchoInput(ei);
