Determine whether all graviton-parity fortuitous classes lift at one loop
Determine whether every fortuitous class with the charge-conjugation parity of gravitons in its charge sector becomes lifted at one loop, or whether some such classes survive the first quantum correction and require analysis at higher order.
References
It remains to determine whether all fortuitous classes with graviton parity lift at one loop, or whether some survive this order and require a higher-order analysis.
— Non-Coulomb $Q$-Cohomology and Quantum Lifting
(2610.22332 - Kibe et al., 15 Oct 2026) in Section 5.4, “Other non-Coulomb classes”