"Source: Text/Geometry/ModAbVar.text";
"Line: 2112";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Geometry/ModAbVar.text, line: 2112
// Example: H148E38 ()
print "Example: H148E38";
ei := GetEchoInput();
SetEchoInput(true);
A := ZeroModularAbelianVariety(); A;
J := JZero(22); J;
A subset J;
assert $1;
J4 := JZero(22,4); J4;
IsOnlyMotivic(J4);
assert $1;
JOne(22); 
Jplus := JZero(22,2,+1); Jplus;
Sign(Jplus);
assert $1 eq 1;
Sign(JZero(22));
assert $1 eq 0;
SetEchoInput(ei);
