The Brumer–Stark conjecture for partial zeta values
Let be totally real, let be a finite abelian CM extension with Galois group , and let , where splits completely in . Let be an auxiliary finite set of primes satisfying the stated integrality hypotheses, let be the group of elements of whose absolute values are at every place not dividing , and let be a prime of above . The Brumer–Stark conjecture. There exists an element such that and, for every ,
This is the Brumer–Stark conjecture in Gross's formulation, relating valuations of a global unit to integral partial zeta values. It has been proved away from by Dasgupta–Kakde and over by Dasgupta–Kakde–Silliman–Wang.
References
Primary source
Matthew H. L. Honnor, “On the Root of Unity Ambiguity in a Formula for the Brumer–Stark Units”, arXiv:2302.12332 (2025).
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