Sh:1114

• Shelah, S., & Steprāns, J. (2018). Trivial and non-trivial automorphisms of \mathcal P(\omega_1)/[\omega_1]^{<\aleph_0}. Fund. Math., 243(2), 155–168. DOI: 10.4064/fm402-11-2017 MR: 3846847
• Abstract:
  The following statement is shown to be independent of set theory with the Continuum Hypothesis: There is an automorphism of \mathcal{P}(\omega_1)/[\omega_1]^{<\aleph_0} whose restriction to \mathcal{P} (\alpha) / [\alpha]^{<\aleph_0} is induced by a bijection for every \alpha \in \omega_1, but the automorphism itself is not induced by any bijection on \omega_1.
• Version 2017-11-06_11 (15p) published version (14p)

@article{Sh:1114,
 author = {Shelah, Saharon and Stepr{\={a}}ns, Juris},
 title = {{Trivial and non-trivial automorphisms of $\mathcal P(\omega_1)/[\omega_1]^{<\aleph_0}$}},
 journal = {Fund. Math.},
 fjournal = {Fundamenta Mathematicae},
 volume = {243},
 number = {2},
 year = {2018},
 pages = {155--168},
 issn = {0016-2736},
 mrnumber = {3846847},
 mrclass = {03E20 (03E35 03G05)},
 doi = {10.4064/fm402-11-2017}
}