Enrique Casanovas, Saharon Shelah
Published 2017-05-07Version 1
Our aim is to solve a quite old question on the difference between expandability and compact expandability. Toward this, we further investigate the logic of countable cofinality.
There is a $+$-Ramsey \textsf{MAD} family
MA$_{ω_1}(S)[S]$ does not imply $\mathcal{K}_2$
Counting siblings in universal theories
![QR code for arXiv:1705.02611 [math.LO]](http://oss.arxitics.com/images/favicon.svg)