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On the root of unity ambiguity in a formula for the Brumer–Stark units
Published online by Cambridge University Press: 27 December 2023
Abstract
We prove a conjectural formula for the Brumer–Stark units. Dasgupta and Kakde have shown the formula is correct up to a bounded root of unity. In this paper, we resolve the ambiguity in their result. We also remove an assumption from Dasgupta–Kakde’s result on the formula.
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- © The Author(s), 2023. Published by Cambridge University Press on behalf of The Canadian Mathematical Society
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