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Cohomological invariants of root stacks and admissible double coverings
Published online by Cambridge University Press: 02 November 2021
Abstract
We give a formula for the cohomological invariants of a root stack, which we apply to compute the cohomological invariants and the Brauer group of the compactification of the stacks of hyperelliptic curves given by admissible double coverings.
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- © Canadian Mathematical Society 2021
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