-- -*- M2-comint -*- {* hash: -278167790 *} i1 : R = QQ[symbol a..symbol f]; i2 : I = pfaffians(4, genericSkewMatrix(R,4)) o2 = ideal(c*d - b*e + a*f) o2 : Ideal of R i3 : P = groebnerFan(I) LP algorithm being used: "cddgmp". LP algorithm being used: "cddgmp". o3 = PolymakeObject{...11...} o3 : PolymakeObject i4 : peek P o4 = PolymakeObject{AMBIENT_DIM => 6 } CONES => {{}, {0}, {1}, {2}, {0, 1}, {0, 2}, {1, 2}} DIM => 6 F_VECTOR => {1, 3, 3} LINEALITY_DIM => 4 LINEALITY_SPACE => | 1 0 0 0 0 -1 | | 0 1 0 0 -1 0 | | 0 0 1 0 1 1 | | 0 0 0 1 1 1 | MAXIMAL_CONES => {{}, {0}, {1}, {2}, {0, 1}, {0, 2}, {1, 2}} N_RAYS => 3 ORTH_LINEALITY_SPACE => | 1 0 -1 -1 0 1 | | 0 1 -1 -1 1 0 | PURE => 1 RAYS => | -2 1 1 1 1 -2 | | 1 -2 1 1 -2 1 | | 1 1 -2 -2 1 1 | i5 :