ArrCharPoly -- characteristic polynomial of an arrangement of hyperplanes |
Syntax |
ArrCharPoly(A: LIST): RINGELEM |
Description |
Example |
/**/ use QQ[x,y]; /**/ A := [x, x-y, y]; /**/ ArrCharPoly(A); t^2 -3*t +2 /**/ RingOf(ArrCharPoly(A)); RingWithID(4, "QQ[t]") /**/ use ZZ/(5)[x,y]; /**/ A := [x, x-y, y]; /**/ ArrCharPoly(A); t^2 -3*t +2 /**/ RingOf(ArrCharPoly(A)); RingWithID(4, "QQ[t]") |
See Also |