Geodesic
When automorphisms of $\mathcal P(\kappa )/[\kappa ]^{\aleph _0}$ are trivial off a small set
Saharon Shelah1 ; Juris Steprāns2
1 Department of Mathematics Rutgers University Hill Center Piscataway, NJ 08854-8019, U.S.A. and Institute of Mathematics Hebrew University Givat Ram, Jerusalem 91904, Israel
2 Department of Mathematics York University 4700 Keele Street Toronto, ON, Canada M3J 1P3
Fundamenta Mathematicae, Tome 235 (2016) no. 2, pp. 167-181

Voir la notice de l'article provenant de la source Institute of Mathematics Polish Academy of Sciences

It is shown that if $\kappa \gt 2^{\aleph _0}$ and $\kappa $ is less than the first inaccessible cardinal then every automorphism of $\mathcal P(\kappa )/[\kappa ]^{ \lt \aleph _0}$ is trivial outside of a set of cardinality $2^{\aleph _0}$.
DOI : 10.4064/fm222-2-2016
Keywords: shown kappa aleph kappa first inaccessible cardinal every automorphism mathcal kappa kappa aleph trivial outside set cardinality aleph

Saharon Shelah 1 ; Juris Steprāns 2

1 Department of Mathematics Rutgers University Hill Center Piscataway, NJ 08854-8019, U.S.A. and Institute of Mathematics Hebrew University Givat Ram, Jerusalem 91904, Israel
2 Department of Mathematics York University 4700 Keele Street Toronto, ON, Canada M3J 1P3 
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Saharon Shelah; Juris Steprāns. When automorphisms of $\mathcal P(\kappa )/[\kappa ]^{<\aleph _0}$ are trivial off a small set. Fundamenta Mathematicae, Tome 235 (2016) no. 2, pp. 167-181. doi: 10.4064/fm222-2-2016

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