"Source: Text/Geometry/Crv.text";
"Line: 5653";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Geometry/Crv.text, line: 5653
// Example: H124E33 ()
print "Example: H124E33";
ei := GetEchoInput();
SetEchoInput(true);
P<x,y,z> := ProjectiveSpace(GF(7),2);
C := Curve(P,y^2*z - x^3 - x*z^2 - z^3);
F := FunctionField(C);
D := Divisor(C,F!(x/z));
IsCanonical(D);
_, dd := IsCanonical(D);
Valuation(dd,Support(D)[1]);
assert $1 eq -2;
SetEchoInput(ei);
