Bloch–Kato conjecture for geometric irreducible representations

Let pp be a prime, let cKcK be a pp-adic field, and let VV be a geometric irreducible representation of Gal(Q/Q)\mathrm{Gal}(\overline{\mathbf Q}/\mathbf Q) over K\mathcal K. Write VV^\vee for the dual Galois representation and Hf1(Q,V(1))\mathrm H^1_{\mathrm f}(\mathbf Q,V^\vee(1)) for the Bloch–Kato Selmer group with coefficients in V(1)V^\vee(1). Bloch–Kato conjecture. The Hasse–Weil LL-function L(V,s)L(V,s) has a meromorphic continuation to C\mathbf C and satisfies

ranks=0L(V,s)=dimKHf1(Q,V(1))dimKH0(Q,V(1)).\operatorname{rank}_{s=0}L(V,s)=\dim_{\mathcal K}\mathrm H^1_{\mathrm f}(\mathbf Q,V^\vee(1))-\dim_{\mathcal K}\mathrm H^0(\mathbf Q,V^\vee(1)).

This conjecture predicts a relation between the analytic rank of the Hasse–Weil LL-function and the Bloch–Kato Selmer group. The paper proves it for the pp-adic Galois representations associated with full-level Hecke eigen cuspforms under the depth–weight compatibility on the motivic fundamental Lie algebra, while the stated general form remains open.

Sources & referencesView supporting material

Primary source

Kenji Sakugawa, “The depth-weight compatibility on the motivic fundamental Lie algebra and the Bloch-Kato conjecture for modular forms”, arXiv:2402.13406 (2025).

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