Successive failures of approachability (Q2040207)
From MaRDI portal
scientific article
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Successive failures of approachability |
scientific article |
Statements
Successive failures of approachability (English)
0 references
12 July 2021
0 references
The author shows that it is consistent relative to large cardinals that \(\omega_{\omega^2}\) is a strong limit and Shelah's approachable ideal \(I[\sigma]\) is proper for each regular cardinal \(\sigma\) with \(\omega_2 \leq \sigma \leq \omega_{\omega^2 + 3}\).
0 references
approachable ideal
0 references
special Aronszajn tree
0 references
diagonal Prikry forcing
0 references
