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arXiv · 2403.19564

Closedness of the singular locus and generation for derived categories

Souvik Dey·Pat Lank
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Abstract

This work is concerned with a relationship regarding the closedness of the singular locus of a Noetherian scheme and existence of classical generators in its category of coherent sheaves, associated bounded derived category, and singularity category. Particularly, we extend an observation initially made by Iyengar and Takahashi in the affine context to the global setting. Furthermore, we furnish an example a Noetherian scheme whose bounded derived category admits a classical generator, yet not every finite scheme over it exhibits the same property.

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Souvik Dey, Pat Lank. 2025-07-14. Closedness of the singular locus and generation for derived categories. https://arxiv.org/abs/2403.19564

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