The F C-prime subgroup conjecture for Artin groups

A group $G$ has property ${\rm F}\mathcal{C}'$ if every cellular action of $G$ on a finite-dimensional CAT$(0)$ cube complex is locally elliptic. A subgroup is non-trivial if it is not the trivial group. The ${\rm F}\mathcal{C}'$-subgroup conjecture. Artin groups have no non-trivial ${\rm F}\mathcal{C}'$-subgroups. The paper notes that this is known for right-angled Artin groups, while the assertion for general Artin groups remains open.