lct -- Compute the log-canonical threshold of an arrangement

Synopsis

• Usage:

  lct(A)

• Inputs:
  • A, a central hyperplane arrangement, a central hyperplane arrangement
• Outputs:
  • a rational number, The log-canonical threshold of A.

Description

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

See also

• multIdeal -- compute a multiplier ideal