Let's consider Example 6.3 of Berkesch and Leykin from arXiv:1002.1475v2:
i1 : R := QQ[x,y,z]; |
i2 : A := arrangement ((x^2 - y^2)*(x^2 - z^2)*(y^2 - z^2)*z); |
i3 : lct A 3 o3 = - 7 o3 : QQ |
The object lct is a method function.