"Source: Text/Geometry/ModAbVar.text";
"Line: 1150";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Geometry/ModAbVar.text, line: 1150
// Example: H148E19 ()
print "Example: H148E19";
ei := GetEchoInput();
SetEchoInput(true);
J := JZero(512, 2, +1);
A := Decomposition(J)[7]; A;
f := Newform(A); f;
Coefficient(f,3)^2;
assert $1 eq 6;
Coefficient(f,5)^2;
assert $1 eq 12;
Coefficient(f,7)^2;
assert $1 eq 8;
Abar := BaseExtend(JZero(512,2,+1)(7),AlgebraicClosure(RationalField()));
InnerTwists(Abar);
CMTwists(Abar);
SetEchoInput(ei);
