Nontrivial summable ideal below a cotype-generated representation
Determine whether a B-representation in a Banach space of non-trivial cotype can be chosen so that the associated summable ideal defined by the q-th powers of the vector norms is non-trivial.
References
However, it remains an open question whether one can choose the B-representation such that this summable ideal is non-trivial.
— $F_σ$-ideals, colorings, and representation in Banach spaces
(2501.15643 - Lopez-Abad et al., 26 Jan 2025) in Section 1, page 3