I saw this term or symbol “End$(\mathcal{F})$", where $\mathcal{F}$ is a quasi-coherent sheaf, in some places, e.g. First Ext group of a sheaf. But I found nothing on Google when I typing "sheaf of endomorphisms". So, can someone give me the definition. Thanks.
2026-04-02 21:50:24.1775166624
What is the sheaf of endomorphisms?
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