"Source: Text/Geometry/Toric.text";
"Line: 3212";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Geometry/Toric.text, line: 3212
// Example: H129E21 ()
print "Example: H129E21";
ei := GetEchoInput();
SetEchoInput(true);
X<[x]> := RationalScroll(Rationals(),1,[0,0,0,1,1,1,1,2]);
X;
_ := NefCone(X);
IsFlipping(X,1: divisor:=ZeroDivisor(X), inequality:="weak");
assert not $1;
IsFlipping(X,2: divisor:=ZeroDivisor(X), inequality:="weak");
assert $1;
Y<[y]> := Flip(X,2: divisor:=ZeroDivisor(X), inequality:="weak");
Y;
IsNonsingular(Y);
assert not $1;
IsTerminal(Y);
assert $1;
WeightsOfFlip(X,2: divisor:=ZeroDivisor(X), inequality:="weak");
SetEchoInput(ei);
