findHeft -- find a heft vector for a list of degrees

Synopsis

• Usage:

  findHeft( x, DegreeRank => ... )

• Inputs:
  • x, a list, a list of multi-degrees, each of which is a list of integers of length r
• Optional inputs:
  • DegreeRank => an integer, default value null, an integer, r, say
• Outputs:
  • a list of integers of length r whose dot product with each member of x is greater than zero, or null, if there is none

Description

i1 : findHeft ( {{-1,0}, {2,1}}, DegreeRank => 2 )

o1 = {-1, 3}

o1 : List

i2 : findHeft ( {}, DegreeRank => 0 )

o2 = {}

o2 : List