sheaf(Variety) -- make a coherent sheaf

Synopsis

• Function: sheaf

• Usage:

  sheaf X

• Inputs:
  • X, a variety
• Outputs:
  • the structure sheaf of rings on the variety X

Description

i1 : R = QQ[x,y,z]

o1 = R

o1 : PolynomialRing

i2 : X = Proj R

o2 = X

o2 : ProjectiveVariety

i3 : Y = Spec R

o3 = Y

o3 : AffineVariety

i4 : sheaf X

o4 = OO
       X

o4 : SheafOfRings

i5 : sheaf Y

o5 = OO
       Y

o5 : SheafOfRings