Finite generation conjecture for homology of no-k-equal configuration spaces

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Let jj and ww be integers, let config⁡(n,w)\operatorname{config}(n,w) denote the relevant configuration space, and let FI⁡d\operatorname{FI}_d be the category of finite sets and injections with d=1+⌊jw−1⌋d=1+\left\lfloor\frac{j}{w-1}\right\rfloor. The homology groups Hj(config⁡(n,w))H_j(\operatorname{config}(n,w)) form a sequence indexed by nn. Finite generation conjecture. For any jj and ww, the homology groups

Hj(config⁡(n,w))H_j(\operatorname{config}(n,w))

form a finitely generated FI⁡d\operatorname{FI}_d-module for

d=1+⌊jw−1⌋.d=1+\left\lfloor\frac{j}{w-1}\right\rfloor.

This would generalize the paper's finite-generation results for disks in a strip and for no-kk-equal spaces to the spaces config⁡(n,w)\operatorname{config}(n,w) with w>2w>2; the source does not provide a resolution of the conjecture.

References

Primary source

Hannah Alpert, “Generalized representation stability for disks in a strip and no-k-equal spaces”, arXiv:2006.01240 (2020).

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