Sh:944
- Shelah, S. (2018). Models of PA: standard systems without minimal ultrafilters. Sarajevo J. Math., 14(27)(1), 3–11. arXiv: 0901.1499 MR: 3858024
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        Abstract:
        
 We prove that \mathbb N has an uncountable elementary extension N such that there is no ultrafilter on the Boolean Algebra of subsets of \mathbb N represented in N which is so called minimal.
- Version 2018-09-26_12 (10p) published version (10p)
    Bib entry  
  @article{Sh:944,
 author = {Shelah, Saharon},
 title = {{Models of PA: standard systems without minimal ultrafilters}},
 journal = {Sarajevo J. Math.},
 fjournal = {Sarajevo Journal of Mathematics},
 volume = {14(27)},
 number = {1},
 year = {2018},
 pages = {3--11},
 issn = {1840-0655},
 mrnumber = {3858024},
 mrclass = {03C62 (03C50 03C55 03E40)},
 note = {\href{https://arxiv.org/abs/0901.1499}{arXiv: 0901.1499}},
 arxiv_number = {0901.1499}
}