Embeddings into đť“ź(â„•)/fin and extension of automorphisms
A. Bella ; A. Dow ; K. P. Hart ; M. Hrusak ; J. van Mill ; P. Ursino
Fundamenta Mathematicae, Tome 173 (2002), p. 271-284 / Harvested from The Polish Digital Mathematics Library
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Given a Boolean algebra 𝔹 and an embedding e:𝔹 → 𝓟(ℕ)/fin we consider the possibility of extending each or some automorphism of 𝔹 to the whole 𝓟(ℕ)/fin. Among other things, we show, assuming CH, that for a wide class of Boolean algebras there are embeddings for which no non-trivial automorphism can be extended.

Publié le : 2002-01-01
EUDML-ID : urn:eudml:doc:283111 
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     title = {Embeddings into P(N)/fin and extension of automorphisms},
     journal = {Fundamenta Mathematicae},
     volume = {173},
     year = {2002},
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A. Bella; A. Dow; K. P. Hart; M. Hrusak; J. van Mill; P. Ursino. Embeddings into đť“ź(â„•)/fin and extension of automorphisms. Fundamenta Mathematicae, Tome 173 (2002) pp. 271-284. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-fm174-3-7/