sheaf(Variety,Module) -- make a coherent sheaf

Synopsis

• Function: sheaf

• Usage:

  sheaf(X,M)

• Inputs:
  • X, a variety
  • M, a module
• Outputs:
  • a coherent sheaf, the coherent sheaf on the variety X corresponding to the module M

Description

If X is the affine variety Spec R, then M should be an R-module. If X is the projective variety Proj R, then M should be a homogeneous R-module.