The L-theoretic Farrell–Jones conjecture with additive-category coefficients

Let GG be a group, let EVCY(G)E_{\mathcal{VCY}}(G) be the classifying GG-space for the family of virtually cyclic subgroups, and let A\mathcal{A} be an additive GG-category with involution. The equivariant homology theory with coefficients in the LL-theory spectrum is denoted HG(;LA)H_*^G(-;\mathbf{L}_{\mathcal{A}}^{\langle-\infty\rangle}). The L-theoretic Farrell–Jones conjecture with additive-category coefficients. For every additive GG-category with involution A\mathcal{A} and every nZn\in\mathbb{Z}, the assembly map induced by EVCY(G)G/GE_{\mathcal{VCY}}(G)\to G/G,

HnG(EVCY(G);LA)HnG(G/G;LA)=Ln(A[G]),H_n^G(E_{\mathcal{VCY}}(G);\mathbf{L}_{\mathcal{A}}^{\langle-\infty\rangle})\longrightarrow H_n^G(G/G;\mathbf{L}_{\mathcal{A}}^{\langle-\infty\rangle})=L_n^{\langle-\infty\rangle}(\mathcal{A}[G]),

is bijective. This is the coefficient-enriched LL-theoretic Farrell–Jones conjecture; the source gives no resolution status.

Sources & referencesView supporting material

Primary source

Wolfgang Lueck, “Survey on the Farrell-Jones Conjecture”, arXiv:2507.11337 (2025).

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