"Source: Text/Geometry/Toric.text";
"Line: 3191";
"Date: Thu Sep 25 14:47:45 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Geometry/Toric.text, line: 3191
// Example: H129E20 ()
print "Example: H129E20";
ei := GetEchoInput();
SetEchoInput(true);
F0 := FanOfWPS([1,1,1,1]);
L3 := Ambient(F0);
F := Blowup(F0,L3 ! [2,-5,3]);
X := ToricVariety(Rationals(),F);
ExtremalRays(X);
TypeOfContraction(X,1);
TypeOfContraction(X,2);
WeightsOfFlip(X,2);
SetEchoInput(ei);
