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Macaulay2 web site
FourTiTwo
::
rays
rays -- calculates the extreme rays of the cone; invokes "rays" from 4ti2
Synopsis
Usage:
rays(A)
Inputs:
A
,
a
matrix
, defining the cone
{z : Az = 0, z ≥0 }
Outputs:
B
,
a
matrix
, whose rows are the extreme rays of the cone
{z : Az = 0, z ≥0 }
Description
A = matrix "1,1,1,1; 1,2,3,4"
B = syz A
rays(transpose B)
Ways to use
rays
:
rays(Matrix)