Non-abelian strong Coates-Sinnott conjecture for higher étale cohomology

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Let K/kK/k be a Galois extension of number fields with Galois group GG, let pp be an odd prime, let n>1n>1, and let SS and TT be finite non-empty disjoint sets of places of kk, with SS containing the ramified and infinite places, no pp-adic place in TT, and with CST(Zp(n))C_S^T(\mathbb Z_p(n)) the complex defined in the paper. Non-abelian strong Coates-Sinnott conjecture. One has

θST(1−n)∈Fitt⁡ZpGmax⁡(H2(CST(Zp(n)))).\theta_S^T(1-n)\in\operatorname{Fitt}_{\mathbb Z_pG}^{\max}\left(H^2\left(C_S^T(\mathbb Z_p(n))\right)\right).

This is the higher analogue of the strong Brumer-Stark property. It is intended to yield a non-abelian analogue of the Coates-Sinnott conjecture; the paper notes that the corresponding strong property does not hold in general in degree zero, whereas the higher analogue is conjectured to behave better.

References

Primary source

Andreas Nickel, “Equivariant Iwasawa theory and non-abelian Stark-type conjectures”, arXiv:1109.5525 (2012).

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