Tamagawa number conjecture for (M,OF)(M,\mathcal{O}_F)

From papers

Let MM be a motive over KK, let F=FλF=\mathcal{F}_\lambda, and let TT be a stable OF\mathcal{O}_F-lattice in its realization. Assume the local hypotheses and the motivic cohomology conjecture for MM and M(1)M^*(1), as well as the generalized Deligne conjecture. Let γ\gamma be the determinant basis specified in the analytic-rank-zero formulation, and let x,yx,y be determinant bases of the two motivic Selmer groups. Tamagawa number conjecture. There is an OF\mathcal{O}_F-basis

zγdetOF1(RΓ(GK,S,T))\mathfrak{z}_\gamma\in\det_{\mathcal{O}_F}^{-1}(\mathbf{R}\Gamma(G_{K,S},T))

such that

ϑ(zγ)=LS(M,0)Ωγ,δRx,yxyδ.\vartheta(\mathfrak{z}_\gamma)=\frac{L_S^*(M,0)}{\Omega_{\gamma,\delta}R_{x,y}}\,x\otimes y\otimes\delta^*.

This is the arbitrary-analytic-rank determinant formulation of the Tamagawa number conjecture; the source gives no resolution.

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Sources & referencesView supporting material

Primary source

Takamichi Sano, “On the Tamagawa number conjecture for modular forms twisted by anticyclotomic Hecke characters”, arXiv:2510.01601 (2025).

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