Sh:574

• Džamonja, M., & Shelah, S. (1999). Similar but not the same: various versions of \clubsuit do not coincide. J. Symbolic Logic, 64(1), 180–198. arXiv: math/9710215 DOI: 10.2307/2586758 MR: 1683902
• Abstract:
  We consider various versions of the \clubsuit principle. This principle is a known consequence of \diamondsuit. It is well known that \diamondsuit is not sensitive to minor changes in its definition, e.g. changing the guessing requirement form “guessing exactly” to “guessing modulo a finite set”. We show however, that this is not true for \clubsuit. We consider some other variants of \clubsuit as well.
• Version 1997-10-12_10 (27p) published version (20p)

@article{Sh:574,
 author = {D{\v{z}}amonja, Mirna and Shelah, Saharon},
 title = {{Similar but not the same: various versions of $\clubsuit$ do not coincide}},
 journal = {J. Symbolic Logic},
 fjournal = {The Journal of Symbolic Logic},
 volume = {64},
 number = {1},
 year = {1999},
 pages = {180--198},
 issn = {0022-4812},
 mrnumber = {1683902},
 mrclass = {03E05 (03E35)},
 doi = {10.2307/2586758},
 note = {\href{https://arxiv.org/abs/math/9710215}{arXiv: math/9710215}},
 arxiv_number = {math/9710215}
}