The local equivariant Tamagawa number conjecture for Tate motives
The local equivariant Tamagawa number conjecture for Tate motives
Let be an odd prime, let be a finite abelian extension of number fields with Galois group , and let contain , with . For , let and be the determinant module and its specified isomorphism to . For each finite prime of , let be the element defined from the Euler factor, and let be the element whose value under the trivial character is and under every nontrivial character is . Also write for the leading-term element and for the number of real places of . The local equivariant Tamagawa number conjecture. For any , there is a unique -basis such that
This is the equivariant refinement of the local Tamagawa number conjecture for the Tate motives , incorporating the delicate sign and Euler-factor corrections. The paper proves this assertion under the stated unramified-at- hypotheses, so the conjecture is treated as solved here.
Sources & referencesView supporting material
Primary source
Mahiro Atsuta, Naoto Dainobu and Takenori Kataoka, “On the local equivariant Tamagawa number conjecture for Tate motives”, arXiv:2512.14247 (2025).
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