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math.AG2023
Half canonical rings of Gorenstein spin curves of genus two
Stephen Coughlan, Marco Franciosi, Rita Pardini +1
We introduce the notion of generalised Gorenstein spin structure on a curve and we give an explicit description of the associated section ring for curves of genus two with ample ca…
math.AG2023
I-surfaces from surfaces with one exceptional unimodal point
Sönke Rollenske, Diana Torres
We complement recent work of Gallardo, Pearlstein, Schaffler, and Zhang, showing that the stable surfaces with and they construct are indeed the on…