EMBEDDINGS INTO P(N)/fin AND EXTENSION OF AUTOMORPHISMS
نویسنده
چکیده
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.
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