ChainComplex Array -- degree shift

Synopsis

• Usage:

  D = C[i]

• Operator: SPACE
• Inputs:

  • C, a chain complex,
  • i, an array, an array [i] containing an integer i
• Outputs:

  • D, a chain complex, a new chain complex D in which D_j is C_(i+j). The signs of the differentials are reversed if i is odd.