makeALDifferential -- "makes the differential used in ciOperatorResolution"

• Usage:

  dj = makeALDifferential(j, A, L, u)

• Inputs:
  • j, an integer, which differential
  • A, a complex, lift of resolution from complete intersection S-->R
  • L, a complex, Koszul complex resolving R over S
  • u, a hash table, output of higherCIOperators
• Outputs:
  • dj, a matrix, j-th differential of the ciOperatorResolution AL