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Tame nodal stacky curves

Published 25 Sep 2025 in math.AG | (2509.20629v1)

Abstract: In this paper we analyze the properties of tame nodal stacky curves, in particular twisted curves and \textit{doubly-twisted} curves. Our main results are a complete classification of the possible structures of a tame stacky node, along with computations of the Picard and Brauer groups of nodal stacky curves.

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