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The Stacks project

Lemma 31.24.4. Let X be a locally Noetherian scheme having no embedded points. Let \mathcal{L} be an invertible \mathcal{O}_ X-module. Then \mathcal{L} has a regular meromorphic section.

Proof. For each generic point \eta of X pick a generator s_\eta of the free rank 1 module \mathcal{L}_\eta over the artinian local ring \mathcal{O}_{X, \eta }. It follows immediately from the description of \mathcal{K}_ X and \mathcal{K}_ X(\mathcal{L}) in Lemma 31.24.3 that s = \prod s_\eta is a regular meromorphic section of \mathcal{L}. \square


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