Sh:1022

• Rosłanowski, A., & Shelah, S. (2014). Around cofin. Colloq. Math., 134(2), 211–225. arXiv: 1304.5683 DOI: 10.4064/cm134-2-5 MR: 3194406
• Abstract:
  We show the consistency of “there is a nice \sigma–ideal I on the reals with add(I)=\omega_1 which cannot be represented as the union of a strictly increasing sequence of length \omega_1 of \sigma-subideals”. This answers a question by Borodulin–Nadzieja and Gła̧b.
• Version 2013-12-11_11 (14p) published version (16p)

@article{Sh:1022,
 author = {Ros{\l}anowski, Andrzej and Shelah, Saharon},
 title = {{Around cofin}},
 journal = {Colloq. Math.},
 fjournal = {Colloquium Mathematicum},
 volume = {134},
 number = {2},
 year = {2014},
 pages = {211--225},
 issn = {0010-1354},
 mrnumber = {3194406},
 mrclass = {03E17 (03E35)},
 doi = {10.4064/cm134-2-5},
 note = {\href{https://arxiv.org/abs/1304.5683}{arXiv: 1304.5683}},
 arxiv_number = {1304.5683}
}