Morel's rational motivic cohomology identification conjecture

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Let SS be a derived scheme. Write HQ\mathrm{H}\mathbb Q for the rational motivic cohomology spectrum over SS, and let 1Q+\mathbb{1}_{\mathbb Q}^+ denote the positive eigenspace in the decomposition

1Q=1Q+×1Q−\mathbb{1}_{\mathbb Q}=\mathbb{1}_{\mathbb Q}^+\times\mathbb{1}_{\mathbb Q}^-

of the rational motivic sphere induced by the swap automorphism of P1⊗P1\mathbb P^1\otimes\mathbb P^1. Morel's conjecture. For any derived scheme SS, there is an equivalence

HQ≃1Q+\mathrm{H}\mathbb Q\simeq \mathbb{1}_{\mathbb Q}^+

in MSS\mathrm{MS}_S. This extends the known identification in the regular noetherian setting and asks whether it remains valid in the larger category of motivic spectra over arbitrary derived schemes.

References

Primary source

Toni Annala, Marc Hoyois and Ryomei Iwasa, “Atiyah duality for motivic spectra”, arXiv:2403.01561 (2024).

Additional references

2 papers in this index state this conjecture (2017–2024). The statement above is taken from the most recent of them; the others are arXiv:1704.07672.

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