"Source: Text/Ring/FldFunG.text";
"Line: 7497";
"Date: Thu Jun 16 15:04:46 2022";
"Main: Thu May 25 10:02:38 2023";
// original file: Text/Ring/FldFunG.text, line: 7497
// Example: H45E42 ()
print "Example: H45E42";
ei := GetEchoInput();
SetEchoInput(true);
Qx<x> := PolynomialRing(RationalField());
k<i> := NumberField(x^2 + 1);
kc<c> := PolynomialRing(k);
kcs<s> := PolynomialRing(kc);
F<s> := FunctionField(s^2 + c^2 - 1);
c := F!c;
Genus(F);
assert $1 eq 0;
e := c + i*s;
ebar := c - i*s;
Degree(e);
assert $1 eq 1;
c eq (e + ebar) / 2; 
assert $1;
s eq (e - ebar) / (2*i);
assert $1;
SetEchoInput(ei);
