"Source: Text/Geometry/ModAbVar.text";
"Line: 2071";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Geometry/ModAbVar.text, line: 2071
// Example: H148E37 ()
print "Example: H148E37";
ei := GetEchoInput();
SetEchoInput(true);
A := JOne(13);
BaseExtend(A,CyclotomicField(7));
BaseExtend(A,AlgebraicClosure(RationalField()));
BaseExtend(A,RealField());
BaseExtend(A,ComplexField());
ChangeRing(A,GF(3));
#ChangeRing(A,GF(3));
B := ChangeRing(A,GF(13)); B;
IsAbelianVariety(B);
assert not $1;
ChangeRing(A,Integers());
ChangeRing(A,PolynomialRing(RationalField(),10));
SetEchoInput(ei);
