The equivariant IP assembly-map conjecture

Let Γ\Gamma be a countable group acting properly and isometrically on the Euclidean space EΓ\mathbb{E}_{\Gamma}, and let μIP\mu_{\mathrm{IP}} denote the assembly map for the equivariant IP-cohomology theory. Equivariant IP assembly-map conjecture. The assembly map is a Γ\Gamma-weak equivalence.

This conjecture is proposed as an analogue of the Baum–Connes and Farrell–Jones conjectures for the equivariant IP-cohomology theory. The paper establishes comparisons with localization and Davis–Lück assembly maps, but the asserted equivalence remains conjectural.

Sources & referencesView supporting material

Primary source

Yosuke Kubota, “Stable homotopy theory of invertible gapped quantum spin systems I: Kitaev's Ω-spectrum”, arXiv:2503.12618 (2025).

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