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The group law of Picard stacks via matrices (2306.14762v1)
Published 26 Jun 2023 in math.AG, math.CT, and math.NT
Abstract: Let S be a site. We show that the 2-stack of strictly commutative Picard stacks over S is algebraic, i.e. it is 2-equivalent to the 2-stack of 2-algebras for an adequate algebraic 2-stack theory over S.
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