Consistency separation between covering and uniformity for E_{I,ε} (and analogously for S_{I,ε})
Determine whether there exists a model of ZFC in which, for some or for all pairs (I, ε) with I a partition of ω into finite nonempty intervals and ε ∈ ℓ^1_+, the covering number cov(E_{I,ε}) is strictly less than the uniformity number non(E_{I,ε}); and, dually, whether there exists a model in which non(E_{I,ε}) < cov(E_{I,ε}). Formulate and resolve the analogous consistency questions for the σ-ideals S_{I,ε}.
References
We discuss some open questions from this study. With regard to~\autoref{cichonext} and items~\ref{cohen}-\ref{miller}, we do not know the following. Is it consistent that $(E_{I,\varepsilon})<(E_{I,\varepsilon})$ for some (or for all) $I$ and $\varepsilon$? Dually, $(E_{I,\varepsilon})<(E_{I,\varepsilon})$? The same questions apply to $S_{I,\varepsilon}$.