Equivariant coarse Novikov conjecture

Let XX be a proper metric space with bounded geometry, and let Γ\Gamma be a countable discrete group acting properly and isometrically on XX. The equivariant coarse assembly map induced by evaluation is

μXΓ:limdK(CL(Pd(X))Γ)limdK(C(Pd(X)Γ))K(C(X)Γ).\mu_X^{\Gamma}:\lim_{d\to\infty}K_*(C^*_L(P_d(X))^{\Gamma})\to\lim_{d\to\infty}K_*(C^*(P_d(X)^{\Gamma}))\cong K_*(C^*(X)^{\Gamma}).

Equivariant coarse Novikov conjecture. The map μXΓ\mu_X^{\Gamma} is rationally injective. This is the injectivity part of the equivariant coarse Baum–Connes conjecture and implies the corresponding Novikov-type statement.

Sources & referencesView supporting material

Primary source

Liang Guo, Qin Wang, Jianchao Wu and Guoliang Yu, “Hilbert-Hadamard spaces and the equivariant coarse Novikov conjecture”, arXiv:2411.18538 (2025).

Additional references

2 papers in this index state this conjecture (2019–2024). The statement above is taken from the most recent of them; the others are arXiv:1909.00529.

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