Virtual RFRSness of all Artin groups

Establish whether every Artin group is virtually RFRS.

Background

The paper answers the modified braid-group question affirmatively by proving that pure braid groups are RFRS, which implies that braid groups are virtually RFRS. It also proves virtual RFRS results for Artin groups of types A_n, B_n=C_n, I_2(n), \widetilde A_n, and \widetilde C_n. The authors then explicitly pose the broader question for all Artin groups, leaving it unresolved.

References

Since virtually special groups are virtually $RFRS$, it makes sense to also ask the following question. Are Artin groups virtually $RFRS$?

— Pure braid groups are RFRS  (2608.13978 - Wu et al., 14 Aug 2026) in Introduction, immediately after Theorem A and before Corollary 1