ChainComplex [...] -- degree shift

ChainComplex [...] -- degree shift

Synopsis:

Usage: D = C[i]

Operator: symbol " " -- blank operator for adjacent expressions

Input:

C, an instance of class ChainComplex:

[i], an instance of class Array: in which i is an integer

Output:

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

Next more general method: GradedModule [...] -- degree shift