The pp-adic equivariant Tamagawa number conjecture for \mathbb{G}_m

Let L/KL/K be the extension and G=Gal(L/K)G={\rm Gal}(L/K), let C=CL,S,TC=C_{L,S,T} be the perfect complex over Z[G]\mathbb{Z}[G], and for a prime pp let CpC_p be its pp-adic realization. For an isomorphism of fields j:CCpj:\mathbb{C}\cong\mathbb{C}_p, let zp=zL/K,S,Tjz_p=z^j_{L/K,S,T} be the associated zeta element. The pp-adic equivariant Tamagawa number conjecture. For every such jj, one has

NrdQp[G](K1(Zp[G]))zp=dZp[G](Cp)pb.{\rm Nrd}_{\mathbb{Q}_p[G]}(K_1(\mathbb{Z}_p[G]))\cdot z_p={\rm d}_{\mathbb{Z}_p[G]}(C_p)^{\rm pb}.

The source states that this equality for all primes pp is equivalent to the equivariant Tamagawa number conjecture for Gm\mathbb{G}_m relative to L/KL/K; no resolution status is supplied.

Sources & referencesView supporting material

Primary source

David Burns and Takamichi Sano, “On non-commutative Iwasawa theory and derivatives of Euler systems”, arXiv:2211.00276 (2025).

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