1. On the set‐theoretic strength of the existence of disjoint cofinal sets in posets without maximal elements. Issue 3 (27th May 2016) Authors: Howard, Paul; Saveliev, Denis I.; Tachtsis, Eleftherios Journal: Mathematical logic quarterly Issue: Volume 62:Issue 3(2016) Page Start: 155 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Ultrafilter extensions do not preserve elementary equivalence. Issue 4 (16th December 2019) Authors: Saveliev, Denis I.; Shelah, Saharon Journal: Mathematical logic quarterly Issue: Volume 65:Issue 4(2019) Page Start: 511 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗