cones(ZZ,TropicalCycle) -- computes the cones of a tropical cycle

Function: cones
Usage:

cones(k,T)
Inputs:
- k, an integer,
- T, a tropical cycle,
Outputs:
- L, a list, the cones of codimension k in T

Description

This function computes the cone of codimension k of the fan associated to the tropical cycle T.

i1 : QQ[x,y,z,w,t]

o1 = QQ[x..z, w, t]

o1 : PolynomialRing

i2 : I=ideal(x^2-y*z+w^2,w^3-y^3*x+z^3,t-w+x);

o2 : Ideal of QQ[x..z, w, t]

i3 : T=tropicalVariety I;

i4 : cones(2,T)

o4 = {{0, 1}, {0, 2}, {0, 3}, {0, 6}, {1, 4}, {1, 5}, {2, 4}, {2, 5}, {3, 4},
     ------------------------------------------------------------------------
     {3, 5}, {4, 6}, {5, 6}}

o4 : List

Ways to use this method:

cones(ZZ,TropicalCycle) -- computes the cones of a tropical cycle

The source of this document is in /__w/M2/M2/macaulay2-1.26.05+ds/M2/Macaulay2/packages/Tropical.m2:1476:0.