"Source: Text/Geometry/GrpPSL2Shim.text";
"Line: 966";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Geometry/GrpPSL2Shim.text, line: 966
// Example: H143E7 ()
print "Example: H143E7";
ei := GetEchoInput();
SetEchoInput(true);
K<z> := CyclotomicField(7);
F := sub<K | z+1/z >;
b := F! (z+1/z);
A<i,j,k> := QuaternionAlgebra<F | b, b>;
O := MaximalOrder(A);
G := FuchsianGroup(O);
P := FundamentalDomain(G, UnitDisc());
P;
P := FundamentalDomain(G);
P;
ArithmeticVolume(P);
ArithmeticVolume(G);
($1)*1.0;
G := FuchsianGroup(QuaternionOrder(10));
P := FundamentalDomain(G);
U, m := Group(G);
U;
SetEchoInput(ei);
