search for:

Synopsis:

C[i] -- shifts the graded module C, producing a new graded module D in which D_j is C_(i+j).

Code:

     -- ../../../Macaulay2/m2/gradedmodules.m2:265-271
     GradedModule Array := GradedModule => (C,A) -> (
          if # A =!= 1 then error "expected array of length 1";
          n := A#0;
          D := new GradedModule;
          D.ring = C.ring;
          scan(spots C, i -> D#(i-n) = C#i);
          D)

search for: