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Macaulay2Doc :: sheafHom(CoherentSheaf,CoherentSheaf)

sheafHom(CoherentSheaf,CoherentSheaf) -- sheaf Hom



If M or N is a sheaf of rings, it is regarded as a sheaf of modules in the evident way.

M and N must be coherent sheaves on the same projective variety or scheme X.

The result is the sheaf associated to the graded module Hom(module M, module N).

i1 : X = Proj(QQ[x,y])

o1 = X

o1 : ProjectiveVariety
i2 : sheafHom(OO_X^1(2),OO_X(11)^1)

o2 = OO  (9)

o2 : coherent sheaf on X, free

See also