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annihilator(CoherentSheaf) -- the annihilator ideal



The annihilator of a sheaf of modules $\mathcal F$ is the ideal corresponding to the kernel of the map of sheaves $$ \mathcal O_X \to \mathcal Hom_{\mathcal O_X}(\mathcal F, \mathcal F).b $$

You may use ann as a synonym for annihilator.

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