"Source: Text/Geometry/ModAbVar.text";
"Line: 6258";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Geometry/ModAbVar.text, line: 6258
// Example: H148E91 ()
print "Example: H148E91";
ei := GetEchoInput();
SetEchoInput(true);
pi := ProjectionOnto(ModularAbelianVariety("33A"));  pi;
Matrix(pi);
pi^2 eq pi;
assert $1;
Rank(pi);
assert $1 eq 1;
SetEchoInput(ei);
