You, Z. and Yuan, J. (2023) How far is almost strong compactness from strong compactness. Journal of Mathematical Logic. ISSN 0219-0613
Abstract
Bagaria and Magidor introduced the notion of almost strong compactness, which is very close to the notion of strong compactness. Boney and Brooke-Taylor asked whether the least almost strongly compact cardinal is strongly compact. Goldberg gives a positive answer in the case SCH holds from below and the least almost strongly compact cardinal has uncountable cofinality. In this paper, we give a negative answer for the general case. Our result also gives an affirmative answer to a question of Bagaria and Magidor.
Metadata
| Item Type: | Article | 
|---|---|
| Authors/Creators: | 
 | 
| Copyright, Publisher and Additional Information: | This is an author produced version of an article published in Journal of Mathematical Logic, made available under the terms of the Creative Commons Attribution License (CC-BY), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. | 
| Keywords: | δ-strong compactness, almost strong compactness, Suslin tree | 
| Dates: | 
 | 
| Institution: | The University of Leeds | 
| Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mathematics (Leeds) > Pure Mathematics (Leeds) | 
| Depositing User: | Symplectic Publications | 
| Date Deposited: | 21 Nov 2023 15:07 | 
| Last Modified: | 21 Nov 2023 15:07 | 
| Status: | Published online | 
| Publisher: | World Scientific Publishing | 
| Identification Number: | 10.1142/s0219061324500090 | 
| Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:205573 | 
Download
Filename: HOW FAR IS ALMOST STRONG COMPACTNESS FROM STRONG COMPACTNESS(accept version).pdf
Licence: CC-BY 4.0
 CORE (COnnecting REpositories)
 CORE (COnnecting REpositories) CORE (COnnecting REpositories)
 CORE (COnnecting REpositories)