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OO _ Variety -- the structure sheaf

Synopsis

Description

i1 : R = QQ[x,y,z]/(y^2*z-x*(x-z)*(x-37*z));
i2 : X = Proj R

o2 = X

o2 : ProjectiveVariety
i3 : OO_X

o3 = OO
       X

o3 : SheafOfRings
i4 : HH^1(OO_X)

       1
o4 = QQ

o4 : QQ-module, free
i5 : HH^0(OO_X(3))

       9
o5 = QQ

o5 : QQ-module, free

See also