Sh:520

• Eklof, P. C., Foreman, M. D., & Shelah, S. (1995). On invariants for \omega_1-separable groups. Trans. Amer. Math. Soc., 347(11), 4385–4402. arXiv: math/9501223 DOI: 10.2307/2155042 MR: 1316849
• Abstract:
  We study the classification of \omega_1-separable groups using Ehrenfeucht-Fraı̈ssé games and prove a strong classification result assuming PFA, and a strong non-structure theorem assuming \diamondsuit.
• Version 1995-01-12_11 (22p) published version (19p)

@article{Sh:520,
 author = {Eklof, Paul C. and Foreman, Matthew Dean and Shelah, Saharon},
 title = {{On invariants for $\omega_1$-separable groups}},
 journal = {Trans. Amer. Math. Soc.},
 fjournal = {Transactions of the American Mathematical Society},
 volume = {347},
 number = {11},
 year = {1995},
 pages = {4385--4402},
 issn = {0002-9947},
 mrnumber = {1316849},
 mrclass = {03C55 (03C60 03E35 20K20)},
 doi = {10.2307/2155042},
 note = {\href{https://arxiv.org/abs/math/9501223}{arXiv: math/9501223}},
 arxiv_number = {math/9501223}
}