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Aug 26, 2023 at 10:50 comment added Jason Starr Welcome new contributor. Your description is the correct description for the (local) regular sections (i.e., holomorphic sections) of the dualizing sheaf of a nodal curve. Witten is constructing a meromorphic section of the dualizing sheaf, not a regular section.
Aug 26, 2023 at 7:11 history edited Dizbro
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S Aug 25, 2023 at 10:55 review First questions
Aug 25, 2023 at 12:14
S Aug 25, 2023 at 10:55 history asked Dizbro CC BY-SA 4.0