The Stacks project

Definition 31.5.1. Let $X$ be a scheme. Let $\mathcal{F}$ be a quasi-coherent sheaf on $X$.

1. We say $x \in X$ is weakly associated to $\mathcal{F}$ if the maximal ideal $\mathfrak m_ x$ is weakly associated to the $\mathcal{O}_{X, x}$-module $\mathcal{F}_ x$.

2. We denote $\text{WeakAss}(\mathcal{F})$ the set of weakly associated points of $\mathcal{F}$.

3. The weakly associated points of $X$ are the weakly associated points of $\mathcal{O}_ X$.